Mel Evans / AP

Investigators wearing protective clothing talk under a tent in Trenton, N.J., on Sunday.

Three children are safe after a 36-hour standoff with an armed man in Trenton, N.J., ended early Sunday, state law enforcement officials said.

But the bodies of a woman, presumed to be home owner Carmelita Stevens, 44 -- the mother of the children -- and a young boy, presumed to be her 13-year-old son, were found decomposing in the home, police revealed at a Sunday morning press conference.

The hostage taker, identified as Gerald "Skip" Murphy,  38, was also killed during the rescue, officials said. He was not believed to have been related to any of the children.

The freed children, a 4-year-old boy, and 16- and 18-year-old girls, were being treated at a local hospital.

Lt. Steve Varn of Trenton Police said the hostage situation ended shortly before 5 a.m. ET, adding that the area around the home where it took place is now secure.

Police were alerted to the situation on Grand Street in Trenton at 2:47 pm on Friday, officials said.

Cops had received a call from a relative of Stevens, saying she hadn't been seen her for a "long period of time" and that her two daughters had not been in school for 12 days, said Mercer County Prosecutor Joseph L. Bocchini Jr. at the Sunday news briefing.

When officers arrived at the Stevens home, they didn't get a response when they knocked on the door, so made a forced entry through a rear door, Bocchini said. When they entered the residence, they immediately smelled the stench of a rotting corpse, and could see maggots, he said.

Upstairs, they found Murphy had barricaded himself inside the house with “multiple” hostages, saying he had a gun and explosives.

When police officers secured the rest of the premises, they discovered a 19-year-old man in the basement, also Stevens' son, who said he hadn't seen his mothers or sisters since mid April.

Homes in the surrounding area were also evacuated as a precautionary measure as hostage negotiators spent nearly two days communicating with Murphy, officials said. Food and bottled water was passed through an upstairs window for the children.

But, noting what NJ State Police Col. Rick Fuentes called Murphy's "deteriorating state of mind," officers eventually made an entry into the room where the hostages were being held, and a single shot was fired at the suspect as he made a violent move toward one of the children.

Murphy, who had warrants for not registering as a sex offender, and a rap sheet that included assault, robbery, weapons and child endangerment charges, was taken to a hospital where he was later pronounced dead.

Officials said it was too early to determine exactly when Stevens and the young boy had been killed, but said that they were in a state of decomposition.

Trenton police were supported by state police and FBI as well as the city’s arson and bomb and canine units, Varn said.

NBC News' Justin Kirschner and Alastair Jamieson contributed to this report.

This story was originally published on Sun May 12, 2013 10:52 AM EDT

Federal officials believe a localized "terror attack" was thwarted when an FBI raid on a Minnesota man's mobile home turned up Molotov cocktails, pipe bombs and several firearms.

Buford Rogers, 24, was apprehended Friday after the raid of his Montevideo, Minn., home.

“The FBI believes that a terror attack was disrupted by law enforcement personnel and that the lives of several local residents were potentially saved,” the Minneapolis FBI office said in a statement released Monday.

Authorities say the thwarted attack was a low-level case of domestic terrorism. The investigation remains ongoing, according to the FBI statement.

Buford is linked to an unidentified militia group, officials said.

The FBI wouldn’t disclose information Monday about the nature or target of the alleged plot, but authorities believe Rogers was targeting an area of western Minnesota, The Associated Press reported.

The alleged plot was exposed after “timely analysis of intelligence and through the cooperation and coordination” between local, state, and federal officials, the statement says.

Rogers has been charged with one count of being a felon in possession of a firearm. He remains in federal custody and is expected to make his first appearance in federal court this week.

It is not known if Rogers has retained an attorney.

Anonymous / New Jersey State Police via AP

This is an undated picture provided by the New Jersey State Police showing Assata Shakur, the former Joanne Chesimard, added Thursday to the FBI's list of most wanted terrorists.

The FBI put a woman on its list of most wanted terrorists for the first time Thursday — a 1970s black radical who authorities say shot a New Jersey trooper, made a daring daylight escape from prison and fled to Cuba.

The agency and the state also doubled the bounty for her capture to $2 million.

The announcement was the latest turn in the 40-year saga of Joanne Chesimard — also known as Assata Shakur — who was part of the Black Liberation Army and became one of the most notorious fugitives in New Jersey history.

“While we cannot right the wrongs of the past, we can and will continue to pursue justice no matter how long it takes,” said Aaron Ford, special agent in charge of the FBI’s Newark office.

In a direct appeal to Chesimard, he said: “Give yourself up, come to America and face justice.”

Chesimard was found guilty of murder in the killing of Trooper Werner Foerster, who was shot dead on May 2, 1973, after stopping her and two associates. The trooper was finished off with his own gun, and the FBI says Chesimard’s gun was found at his side.

She was convicted in 1977 and sent to prison, but she broke out two years later with the help of accomplices from the BLA and the Weather Underground, a left-wing radical organization.

Chesimard lived in safehouses before fleeing to Cuba, where she took the Shakur name and was shielded from the United States by the communist government of Fidel Castro.

She is now 65.

Authorities took note Thursday of the 40th anniversary of the trooper’s killing and said Chesimard’s capture would close a wound for New Jersey state police and prove that they will not give up when one of their own is slain.

Asked whether authorities were encouraging bounty hunters in Cuba, New Jersey Attorney General Jeffrey Chiesa said: “I’m not going to get into exact means. What we’re saying is there’s now $2 million for her safe return to New Jersey that’s available.”

In Cuba, Chesimard has mostly disappeared from the public eye. Her story gained prominence again in 1998, when Pope John Paul II made a visit there.

There a television reporter found Chesimard, who claimed she was the victim of a racist prosecution. The governor of New Jersey was furious, and the state police wrote to the pope to ask him to put pressure on Castro to return Chesimard.

But frosty relations between the United States and Cuba have frustrated American efforts to get her back ever since.

Ford said Chesimard “remains an inspiration to the radical, left-wing, anti-government, black separatist movement.” He said there was no specific new threat that led the bureau to add her to the list.

“Some of those people, and the people that espouse those ideas, are still in this country,” he said. “So we’d be naïve not to think that there’s some communication between her and the people she used to run around with.”

Chesimard, who is the step-aunt of late rapper Tupac Shakur, is the 46th person added to the list of most wanted terrorists since President George W. Bush established it after the Sept. 11 attacks. Osama bin Laden was on the list until he was killed in 2011.

Dmitry Kostyukov / The News York Times via Redux

Anzor Tsarnaev, left, and Zubeidat Tsarnaev, the parents of the two suspects in the Boston bombing, during a news conference in Makhachkala, Russia, April 25, 2013.

The mother of Boston Marathon bombing suspects Tamerlan and Dzhokhar Tsarnaev was placed in a U.S. terror database in the fall of 2011, a counterterrorism official confirmed to NBC News.

Zubeidat Tsarnaeva was placed on the database by the Central Intelligence Agency at the same time as her older son Tamerlan, who was shot and killed by police in the manhunt following the bombings. That Tsarnaeva was placed on the database does not mean the CIA had any specific information that she might be a threat, the official said.

A review of government records found that Tamerlan Tsarnaev was entered into three classified counterterrorism databases, according to public statements by government officials and NBC News sources. He was entered into a Guardian file maintained by the FBI, as well as Homeland Security’s TECS database and a master TIDE list maintained by the National Counterterrorism Center.

The entries for Tamerlan Tsarnaev used some different spellings and dates of birth, a U.S. official brief on the probe said.

An email alert was sent to a Homeland Security officer in the FBI's Joint Terrorism Task Force office in Boston when Tamerlan Tsarnaev traveled to Russia in January 2012, sources have told NBC News, but that spurred no further investigation.

The suspected bombers’ mother has said in interviews that the FBI was watching her son.

“They were monitoring him and I know that because I used to talk to them,” Tsarnaeva told NBC News’ U.K. partner ITN News. “They used to come to our house, like two, three times. And then my son Tamerlan used to tell me that he used to talk to them, too, because they called me once and they wanted his number.”

Tsarnaeva said that she began to practice a “pure” form of Islam while living in the United States about four years ago. She moved to the southern Russian republic of Dagestan about a year ago with the suspects’ father.

On Saturday, a senior law enforcement official told NBC News that investigators are downplaying any connection between a man known as “Misha” and the bombing investigation. Relatives of the suspects earlier this week suggested the man may have helped lead Tamerlan Tsarnaev to radicalism.

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This story was originally published on Sat Apr 27, 2013 12:53 PM EDT

One of the Boston Marathon bombing suspects landed in at least one low-level intelligence database two years ago, and the system alerted U.S. agents when he flew to Russia last year, federal officials told NBC News on Wednesday.

But federal authorities took no action against Tamerlan Tsarnaev because the FBI had already interviewed him at the request of the Russian government and found no sign of terrorist activity, the officials said.

The officials said Russia asked for information about Tsarnaev twice in 2011, once early in the year from the FBI and once in September from the CIA, because the Russians said they had reason to believe he was becoming a radical.

When the FBI turned up nothing after the first request, it asked Russia for further information, but Russia never supplied it, the officials said. The FBI asked again after the September request to the CIA, and Russia again failed to respond, they said.

The FBI in early 2011 opened a threat assessment, its lowest-level investigative step, which automatically put an entry in a low-level intelligence database, the Treasury Enforcement Communications System, the officials told NBC News.

In addition, Rep. Michael McCaul, R-Texas and the head of the House Homeland Security Committee, said Wednesday that Tsarnaev turned up in a database maintained by the National Counterterrorism Center.

That database, the Terrorist Identities Datamart Environment, is almost a half-million names long. It is used to craft smaller terror watch lists, including the no-fly list, but does not by itself stop anyone from traveling.

Some Republicans have questioned whether intelligence agencies adequately shared information about Tsarnaev, who with his brother is accused of killing three people and injuring more than 200 with bombs at the marathon last week.

Slideshow: Aftermath and reaction following Boston bombings

Heightened security, empty streets and memorials mark the the days after the Boston Marathon bombings.

Launch slideshow

“We talked a lot about connecting the dots and stovepipes after 9/11,” McCaul said on MSNBC's “The Daily Rundown.” “Here we are 12 years later and it’s still not working.”

When Tsarnaev flew to Moscow last January, the system “pinged,” in the language of intelligence officials. Those “pings” are common, one official said, and a federal agent might get 30 or 40 per day.

Because the FBI had checked out Tsarnaev, including interviewing him and members of his family, the “ping” led to no further action, the federal officials said.

“Without a tool to cut down on the number of false positives, the FBI would be chasing its tail if it tried to deeply investigate anyone who even remotely ‘pings’ the system,” said Evan Kohlmann, an NBC News terrorism analyst and former consultant to the FBI and Defense Department. “There just aren’t enough FBI agents and analysts to accomplish that task.”

In addition, he said, FBI agents are short on resources, particularly after mandatory federal budget cuts, and Congress has failed in its oversight responsibility to make sure the bureau is advancing its computer tracking capabilities.

“So, in short, the system probably didn’t work here — but there is plenty of blame to go around,” Kohlmann said.

Investigators want to know what Tsarnaev, who is of Chechen origin with a U.S. green card, was doing in Russia for the first half of last year.

The trip coincided with what appears to be increasing agitation in recent years, including posting radical Islamic videos on a YouTube page and disrupting services at a Cambridge, Mass., mosque.

Dzhokhar Tsarnaev, the surviving suspect, has told investigators that he and his brother carried out the attack, that they acted alone and that they did it to defend Islam after the U.S. wars in Iraq and Afghanistan.

Senators should have a chance Thursday to hear more about the Boston investigation at a regularly scheduled administration briefing. Senators indicated Wednesday that the officials from the FBI and the Department of Homeland Security will be there.

Rep. William Keating, a Democrat who represents Boston, said on MSNBC’s “Hardball” that Congress should examine how the United States and Russia shared, or failed to share, information. But he appeared satisfied with how the FBI has handled the case.

“They played it by the book,” he said.

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This story was originally published on Wed Apr 24, 2013 6:06 PM EDT

The brothers suspected in the Boston Marathon bombings may have been headed for New York to party after the attack, the New York police commissioner said Wednesday.

“There was some information that they may have been intent on coming to New York, but not to continue doing what they’re doing,” Kelly told reporters at police headquarters. “The information that we received said something about a party, or having a party.”

A man authorities say was carjacked by the brothers has told investigators he believes one of the brothers said “Manhattan” before he escaped, but investigators have cautioned that it may have been a language mixup because the brothers were speaking with Russian dialects.

The surviving brother has told investigators that the pair acted alone, were inspired by an al Qaeda propaganda magazine, and plotted the bombing to defend Islam after the U.S.-led wars in Iraq and Afghanistan, federal law enforcement officials told NBC News.

Tamerlan Tsarnaev was killed early Friday after a shootout with police in the Boston suburbs. His younger brother and alleged accomplice, Dzhokhar, is in fair condition at a Boston hospital. The brothers killed a campus patrol officer and carjacked an SUV before the shootout, authorities have said.

Homemade explosives and one semi-automatic handgun believed to belong to the brothers were recovered by investigators, officials said. The gun’s serial number was obliterated, but Massachusetts state police were working to reveal the number.

Slideshow: Aftermath and reaction following Boston bombings

Cj Gunther / EPA

Heightened security, empty streets, and memorials mark the the days after the Boston Marathon bombings.

Launch slideshow

Cambridge police, meanwhile, released a booking photo of Tamerlan Tsarnaev from a 2009 domestic violence arrest during which he was accused of assaulting his girlfriend.

In a closed-door session on Wednesday, members of the House Intelligence Committee were briefed by the FBI and other federal agencies on the ongoing investigation. Among the issues discussed is what federal authorities knew about Tamerlan Tsarnaev's trip to Russia as well as a timeline on his radicalization. 

Also, according to an interview with Rep. Dutch Ruppersberger, D-Mich., the ranking member on the committee, it was learned that the device used to trigger the explosives was a remote control for a toy, not a cellphone as thought earlier.

Nine days after the twin blasts near the marathon finish line, authorities early Wednesday reopened the section of Boylston Street in central Boston where the first bomb went off.

The site of the explosion has been paved with fresh cement and is surrounded by orange construction cones but opened to foot traffic. People stopped to pay respects and take photos.

“The people of Boston are strong like cement. Strong people. They get together when it’s needed,” said Robert Bibias, a city masonry worker who early Wednesday cemented over what had been a blood-stained crime scene.

Thousands of people, including police from all over the country, gathered at the baseball stadium of the Massachusetts Institute of Technology for a memorial service for Sean Collier, the campus patrol officer who authorities said was shot to death by the Tsarnaev brothers before the carjacking and shootout.

With police snipers holding positions atop nearby buildings, Vice President Joe Biden called the perpetrators of the marathon bombing “twisted, perverted, cowardly, knockoff jihadis.”

“The irony is, we read about these events, we experience them, but the truth is, on every frontier, terrorism as a weapon is losing,” he said. “It is not gaining adherents.”

Tamerlan Tsarnaev is seen in a booking photo from a 2009 arrest in Cambridge, Mass.

The vice president went on: “We will not hunker down. We will not be intimidated.”

His wife, Dr. Jill Biden, visited Boylston Street on Wednesday.

Private funerals were held Tuesday for Collier and for Martin Richard, the 8-year-old boy killed near the finish line. Two other people were killed at the marathon, and more than 200 were injured, including 39 who were still hospitalized Wednesday.

In Russia, the brothers’ aunt said that a Boston-area mosque has refused to hold a funeral for Tamerlan Tsarnaev.

American authorities have told the family that they can have Tsarnaev’s body, and an uncle approached the mosque to request a burial and funeral but was declined, said the aunt, Patimat Suleimanova.

She said that she did not know the name of the mosque but that it was one the family attended. A mosque in Cambridge, Mass., has said that Tsarnaev attended and occasionally caused disruptions and that mosque leaders threatened to kick him out.

A spokesman for the Cambridge mosque, Yusufi Vali, said the mosque had not heard from the family.

“There were some reports out there that we had rejected his burial, and — or the family had reached out to us, rather. And to our knowledge, you know, the family has not reached out to us,” he said on the MSNBC program “Andrea Mitchell Reports.”

The mosque, run by the Islamic Society of Boston, has also said that congregants have been questioned by the FBI. The mosque did not immediately return a request for comment Wednesday from NBC News.

Earlier this week, Imam Talal Eid of the Islamic Institute of Boston, a separate institution, told The Huffington Post: “I would not be willing to do a funeral for him. This is a person who deliberately killed people. There is no room for him as a Muslim.”

NBC News' Adrienne Mong, Alastair Jamieson, Bill Dedman and Matthew DeLuca contributed to this report.

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This story was originally published on Wed Apr 24, 2013 7:14 AM EDT

MAKHACHKALA, Russia - The father of the suspected Boston Marathon bombers said he was struggling to believe his sons were behind the twin blasts that killed three and injured more than 170.

“I’m planning to find the truth, justice,” said Anzor Tsarnaev during an interview at his home in the southern Russian republic of Dagestan. "I want facts, proof that this is all original because otherwise, anything could be set up."

Tsarnaev’s son Tamerlan, 26, died following a gunbattle with police four days after the bombings. His brother Dzhokhar, 19, was captured on Friday and has been charged with using weapons of mass destruction. 

The case in the United States was clearly taking a toll on Tsarnaev’s wife Zubeidat Tsarnaeva, who told NBC News' U.K. partner ITN News that she "wanted to die."

The FBI had been watching her oldest son when they were in the United States, she told Channel 4.

"They were monitoring him and I know that because I used to talk to them," she said. "They used to come to our house, like two, three times. And then my son Tamerlan used to tell me that he used to talk to them too, because they called me once and they wanted his number.

"At such moments I used to get really worried because, you know, my kids and I’m their mother,” Tsarnaeva told Channel 4 News, which is also NBC News' partner.

An agent told her that they "saw whatever (Tamerlan) was reading," and asked if she thought he would get involved with a radical organization, Tsarnaeva said. "I said no, no," she added.

When NBC News spoke to Tsarnaeva, who says she began to practice a "pure" form of Islam around four years ago in the United States, she became visibly angry at the suggestion that Tamerlan may have visited a Salafist mosque. Salafist Sunnis believe in a very strict interpretation of the Koran.

When asked why her sons were at the finish line of the Boston Marathon, Tsarnaeva told Channel 4 that they were athletes and liked watching the marathon. 

"Last year they went too, and I went last year," she said.

“What happened was a terrible thing," she said.  "But I know that my kids have nothing to do with this. I know it. I am mother. I know my kids."

For his part, the suspects' father described his sons as “wonderful children.”

“They are gentle, like girls, they as soft in their character – soft,” Tsarnaev said.

He called Dzhokhar “an innocent angel.”

The couple say they moved Dagestan over a year ago after Tsarnaev became sick. 

The surviving suspect is a naturalized U.S. citizen of Chechen origin. He made his initial court appearance on Monday at Boston's Beth Israel Deaconess Medical Center, where he was listed in serious condition.

Dzhokhar was assigned three federal public defenders. The charges could carry the death penalty.

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Full coverage of the Boston Marathon tragedy

This story was originally published on Tue Apr 23, 2013 7:34 AM EDT

One of the FBI's Ten Most Wanted fugitives -- Eric Justin Toth, a former D.C. teacher accused of producing and possessing child pornography -- was detained by police in Nicaragua, sources said.

Toth was found over the weekend. He had rented a room in a small town near Managua, was using an assumed name and had a fake passport.

Nicaraguan National Police Chief Aminta Granera said he would be deported immediately because he was in the country illegally, the Associated Press reported.

Toth taught third grade at Beauvoir Elementary School on the grounds of the Washington National Cathedral.

On June 12, 2008, Beauvoir sent a letter to parents saying that a teacher was found in possession of a school-owned camera with inappropriate pictures of a boy. Sources said that pictures of at least three other boys being touched in inappropriate ways were on a thumb drive.

At least one of the boys photographed is believed to be a Beauvoir student. According to police, Toth secretly recorded video of a young boy in a school bathroom.

Read more stories at NBCWashington.com

Toth was terminated and escorted off campus and has not been seen in the D.C. area since that day. When he went on the run, he changed his name and his look, authorities said.

Beauvoir released the following statement:

"We were informed by the U.S. Attorney’s Office (Department of Justice) that former teacher Eric Toth has been arrested.

We commend the work of the Office of the U.S. Attorney and the FBI for their ongoing efforts to apprehend Mr. Toth. They have been tenacious and resolute in their quest to bring this case to justice."

FBI agents tracked Toth to his parents’ home in Madison, Wis. Then in August 2008, his car was found in a parking garage at Minneapolis-St. Paul International Airport.

A note in the car indicated that Toth was contemplating suicide and that his body would be found in a nearby lake, sources said. But investigators believed that was a ruse, police said, and no body was found.

Toth was indicted on child pornography charges in December 2008.

In June 2009, agents received a tip Toth was living and working at a homeless shelter in Phoenix. But when they got there, he was gone.

He is also believed to have traveled to Virginia, Illinois and Indiana.

Toth first entered Nicaragua on Oct. 24 and left Jan. 27, Granera said. He returned on Feb. 12 and that's when Nicaraguan police began keeping a close watch, the AP reported.

Granera said he resisted arrest.

Toth has been described as a computer “expert” and is believed to have an above-average understanding of the Internet and Internet security. According to the FBI, he has the ability to blend in to various socio-economic classes.

Toth worked at Beauvoir for three years. He was known to tutor and babysit Beauvoir students, sources said. He also allegedly spent nights in the homes of young boys.

During their search, the FBI warned Toth could try to get a job as a tutor both for money and for new victims.

The FBI said it put Toth on the Ten Most Wanted list in April 2012 because there were no reliable clues as to his whereabouts and because his Internet skills and alleged penchant for grooming children made him especially dangerous.

Toth is originally from Hammond, Ind., and is a graduate of Purdue University.

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The hospitalized Boston Marathon bombing suspect charged Monday with using a weapon of mass destruction has told investigators that he and his brother were motivated by religion but were not in contact with overseas terrorists or groups, officials said.

Several officials familiar with the initial interrogation of Dzhokhar Tsarnaev described his behavior during questioning as cooperative.

A senior government official said Tsarnaev has told investigators —  by writing some answers down, and by nodding yes or shaking his head no to others — that he and his brother were not in touch with any overseas terrorists or groups.

Tsarnaev, who has injuries to his tongue preventing him from speaking properly, also indicated that he and his brother conceived the bombing attack on their own, and were motivated by religious fervor. 

They got their instructions on how to make bombs from the Internet, he said, according to these officials.

Earlier on Monday, the White House said he will be tried in a civilian court.

FBI Photo

Dzokhar Tsarnaev, 19, was charged Monday with using a weapon of mass destruction in connection with the Boston Marathon bombing.

“He will not be treated as an enemy combatant. We will prosecute this terrorist through our civilian system of justice,” White House Press Secretary Jay Carney said.

“Under U.S. law, United States citizens cannot be tried in military commissions. And it is important to remember that since 9/11 we have used the federal court system to convict and incarcerate hundreds of terrorists.”

Tsarnaev, 19, a naturalized U.S. citizen of Chechen origin, made his initial court appearance at Beth Israel Deaconess Medical  Center, where he was listed in serious condition.

He was advised of his rights and charged with one count of using and conspiring to use a weapon of mass destruction in the U.S. and one count of malicious destruction of property with an explosive device.

He was assigned three federal public defenders. The charges could carry the death penalty.

The suspect agreed to "voluntary detention," but declined to answer questions about bail, according to a court record. A probable cause hearing was set for May 30.

"Today's charges bring a successful end to a tragic week for the city of Boston and for our country," Attorney General Eric Holder said in a statement.

"We will hold those who are responsible for these heinous acts accountable to the fullest extent of the law."

A criminal complaint laid out some of the evidence against Tsarnaev, who was arrested Friday after a daylong manhunt, and his brother, Tamerlan, who was killed during a firefight with police.

A black jacket and white hat, matching the ones worn by "Suspect No. 2" in surveillance video, were found in the younger brother's dorm room, along with green strands of fuse like those used in the marathon explosives that killed three and wounded more than 170.

The video also captured the suspect making a cellphone call seconds before the first bomb exploded on the east end of Boylston St. during last Monday's race, and his utter calm in the face of spreading panic, the complaint said. The footage showed him hurrying away from his knapsack just 10 seconds before a blast erupted where he left it.

Tsarnaev was brought to the hospital with gunshot wounds to the head, neck, leg and hand. He had been communicating with investigators in writing because he couldn't speak, federal officials told NBC News. 

The FBI has not officially revealed a motive for the attack last Monday that killed three people -- one of whom, Krystle Campbell, was laid to rest in Medford on Monday. Investigators are still probing whether the brothers received assistance from others, officials said.

7 biggest unanswered questions in Boston bombing

The feds have asked to speak with Tamerlan's wife, Katherine Russell Tsarnaev, who converted to Islam after she met her future husband at a nightclub. She dropped out of college, got married and had a baby three years ago.

William Farrington / Polaris

The FBI would like to speak to Katherine Russell Tsarnaev, seen here leaving the Cambridge house where she lived with husband Tamerlan Tsarnaev, her lawyer says.

Her lawyer, Amato DeLuca, told The Associated Press he was trying to work out the details of an interview.

His client, he said, worked up to 80 hours a week as a home health aide while Tamerlan watched their daughter. He said she didn't have any suspicions he might be plotting something.

He said she last saw her husband at home on Thursday morning, hours before he and his younger brother allegedly executed a campus police officer, pulled off the carjacking, and led police on a wild bomb-tossing chase that ended in a 200-bullet gun battle.

The carjacking victim told police his abductor asked if he'd heard of the marathon bombing and then said "I did that." 

The man, who has asked that his identity not be revealed, told NBC News that he managed to escape and called his captors “brutal and cautious.”

The victim told police the two men said they "would not kill him because he wasn’t American," according to a police report obtained by NBC News.

Boston's top police official said Monday that while there are many unanswered questions, the city can rest easy.

"We're satisfied the two main actors, the people that were committing the damage out there, have been either captured or killed," Police Commissioner Ed Davis said on TODAY.

"There is still an open question as to exactly what happened in this investigation," he said. "We can't say with 100 percent certainty...anything, actually, at this point."

Among the mysteries Tsarnaev could solve is what his brother did when he traveled to Russia last year and who he met.

Rep. Mike Rogers, R-Mich., chairman of the House Intelligence Committee, said on “Meet the Press” that trip could be when Tamerlan "got that final radicalization to push him to commit acts of violence and where he may have received training." 

FBI, Homeland Security and counterterrorism officials on Tuesday will provide a classified briefing to members of Congress on the Boston Marathon bombings.

Authorities are also trying to figure out where the suspects got their bomb-making supplies and guns. Cambridge Police said neither one had the necessary permits to carry firearms.

Immigration officials have arrested two of Tamerlan Tsarnaev's friends on immigration violations, days after they were detained and questioned by police in New Bedford, Mass.

In another development on Monday, the FBI turned the street where the bombings occurred – Boylston Street -- back over to the city of Boston, which will begin a cleanup and decontamination process before it is reopened to the public. A specific date has not been set.

As part of a handover ceremony, the FBI presented Mayor Thomas Menino with an American flag that flew at half-staff over the Boston Marathon finish line.

NBC News staff writer Jeff Black contributed to this report.

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This story was originally published on Mon Apr 22, 2013 9:18 AM EDT