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Two men have been arrested in the killing of a teenage boy over an iPad in Las Vegas, police said Sunday.

Jacob Dismont, 18, and Michael Solid, 21, were booked Saturday into the Clark County jail on charges of open murder, robbery and conspiracy to commit robbery.

According to investigators, Marcos Arenas, 15, was walking down a street with the iPad on Thursday when a passenger got out of a vehicle and tried to steal the device from him.

Dismont is accused of trying to wrest the tablet away and dragging Arenas toward the SUV when the youth wouldn't let go of the device. After Dismont re-entered the vehicle and Solid sped away, the teen was dragged until he fell, police said. The vehicle ran over Arenas and he died at a hospital.

"I think both the public and police department share the same sentiment that this was a senseless act of violence," police spokesman Bill Cassell told The Associated Press.

The suspects succeeded in making off with the device, officers said.

Ivan Arenas said he bought the iPad for his son less than two months ago. The family has never had a lot, the father said, and his son valued everything he had.

"For him to lose his life over an iPad, it's just not fair," he told the Las Vegas Review-Journal. "Never in my life would I imagine that me buying my kid an iPad for his birthday would end up with him getting run over."

Similar thefts of iPads, IPhones and other Apple devices have become so widespread nationwide that the crime has earned the nickname, "Apple picking," Cassell said.

"This is a nationwide phenomenon where thieves are targeting individuals who are carrying them," he said.

Police urge victims of such crimes to always let go of the devices.

Brian Blanco / EPA

Clutching the Powerball tickets that she estimates she won $8 on, Denise Godsey looks over at a gaggle of gathered television news trucks at a Publix in Zephyrhills, Fla.

The residents of a small Florida town known for its bottled water are now thirsty to know if one of their neighbors is the sole winner of the largest Powerball jackpot in history.

Lottery officials confirmed early Sunday that the one winning ticket for the estimated $590.5 million prize was sold at a Publix supermarket in Zephyrhills, Fla.

But so far, only the losers have come forward.  

“I wish it was it was me. But it wasn’t,” said Cindy Frappier as she exited the lucky Publix on Sunday.  

“I’m happy for whoever did win,” said Roberta Cutting as she made her way into the store.

Zephyrhills is about 30 miles northeast of Tampa, and is where the popular bottled water that bears its name is produced.

It is also a hotbed for skydiving, and attracts thrill seekers from around the world — which increases the possibility that the lotto winner is not from the area, but an out-of-towner who just happened to drop in on the supermarket on while visiting.

Many of the shoppers on Sunday wondered aloud whether or not they know the soon-to-be millionaire, and many hoped some of the winnings would go back into the town with a population of 13,337. 

Joan Albertson drove to the Publix early Sunday morning with her camera in hand, in case the winner emerged. She said she had bought a ticket at a store across the street, and the idea of winning that much money was still something of a shock.

"Oh, there's so much good that you could do with that amount of money," Albertson said. "I don't even know where to begin."

Others, like local Danny Rike, are still holding out hope that they've actually won. Rike participated in a Powerball office pool, and though none of his co-workers have alerted him that they’ve won — no one has said they lost, either.

“It could be a good surprise for tomorrow when I go into work,” he said.

Crunching the numbers reveals that the enormous jackpot could fund the city of Zephyrhills government for 12 years. The $148 million in taxes on the gargantuan purse could fund the federal government for almost 27 minutes.

If the winner takes the lump sum, it will be a $370 million payday, the second largest ever in the U.S.

It traditionally takes days or weeks for big winners like the one on Saturday to come forward. "It never happens this quickly," Florida Lottery spokesman David Bishop told the Associated Press. "If they know they won, they're going to contact their attorney or an accountant first so they can get their affairs in order."

The winning numbers were 10, 13, 14, 22 and 52, with a Powerball of 11. The chances of winning were 1 in 175.2 million.

The country's largest ever jackpot was a $656 million Mega Millions jackpot in March 2012. But that prize was split between winners in Maryland, Kansas and Illinois.

The store where the winning ticket was sold will receive an $85,000 bonus commission, according to Shelly Gerteisen, a spokeswoman for the Florida Lottery.

Publix spokeswoman Maria Brous said that there are a lot of rumors about who won, but the store doesn't know. "We're excited for the winner or winners," she said.

The Associated Press contributed to this report

President Barack Obama on Sunday stressed the importance of personal responsibility and “what it means to be a man” in his commencement address at historically-black Morehouse College in Atlanta.

In the midst of a driving rain, Obama told graduates at the all-male private college that they have obligations to “those still left behind” to be role models for the entire African-American community, both personally and professionally.  

“My whole life, I’ve tried to be for Michelle and my girls what my father wasn’t for my mother and me,” Obama said, referring to his own dad who left his family when the president was just a baby. “I want to break that cycle where a father’s not at home, where a father’s not helping to raise that son and daughter. I want to be a better father, a better husband, a better man.”

The speech was strikingly more personal than the commencement he delivered two weeks early at The Ohio State University when he called on graduates to be engaged citizens. On Sunday, Obama emphasized to the some 500 graduating men of Moreouse to “keep setting an example for what it means to be a man,” praising students who worked multiple jobs to earn a degree while also supporting a family.

He celebrated the legacy of Dr. Martin Luther King Jr., a Morehouse alumnus, whose legacy has opened doors for graduates that have never before existed.

“Laws and hearts and minds have been changed to the point where someone who looks just like you can somehow come to serve as president of these Unites States of America,” he said.

Though opportunities exist now that never have before for black men, the president warned that the legacy of discrimination is still an issue the college graduates will need to overcome.

“Sometimes I wrote off my own failings as just another example of the world trying to keep a black man down. I had a tendency sometimes to make excuses for me not doing the right thing,” Obama said.

“But there is no longer any room for excuses,” he added.

The day before, First Lady Michelle Obama took to the commencement circuit, speaking to outgoing seniors at Martin Luther King Jr. Academic Magnet High School in Tennessee on Saturday.

“Do not waste a minute living someone else’s dream…It takes a lot of work, a lot of real work to discover what brings you joy,” she told graduates.  “It just doesn’t happen; it requires you spending some time.  And you won’t find what you love simply by checking boxes or padding your GPA.”

A week earlier she told graduates at Eastern Kentucky University to get outside their comfort zones and spend time with those who have opposing views.

The president has one more upcoming commencement address at the U.S. Naval Academy on Saturday.

The president and CEO of The Associated Press said Sunday that the government's seizure of AP journalists' phone records was "unconstitutional" and already has had a chilling effect on newsgathering.

Gary Pruitt says the Justice Department's secret subpoena of reporters' phone records has made sources less willing to talk to AP journalists.

The Justice Department disclosed the seizure of two months of phone records in a letter the AP received May 10. The letter did not state a reason, but prosecutors had said they were conducting a leaks investigation into how the AP learned about an al-Qaeda bomb plot in Yemen before it was made public last year. Pruitt said the AP story contradicted the government's claim at the time there was no terrorist plot.

Pruitt spoke on CBS' "Face the Nation."

Earl Neikirk / Bristol Herald Courier via AP

Emergency personnel attend to the injured after a car veered into paradegoers in Damascus, Va., on Saturday, injuring dozens.

DAMASCUS, Va. -- An elderly driver plowed into dozens of hikers marching in a Saturday parade in a small Virginia mountain town and investigators were looking into whether he suffered a medical emergency before the accident.

About 50 to 60 people suffered injuries ranging from critical to superficial, but no fatalities were reported. Three of the worst injured were flown by helicopter to area hospitals. Their conditions weren't immediately available.

Another 12 to 15 victims were taken to hospitals by ambulance and the rest were treated at the scene, where some paramedics and other first-responders were participating in the parade.

It happened around 2:10 p.m. during the Hikers Parade at the Trail Days festival, an annual celebration of the Appalachian Trail in Damascus, near the Tennessee state line about a half-hour drive east of Bristol.

Damascus Police Chief Bill Nunley didn't release the driver's name or age but said he was participating in the parade and he had traversed the Appalachian Trail in the past. Multiple witnesses described him as an elderly man.

Nunley said the man's 1997 Cadillac was one of the last vehicles in the parade and the driver might have suffered an unspecified medical problem when his car accelerated to about 25 mph and struck the crowd on a two-lane bridge along the town's main road. The driver was among those taken to hospitals.

"It is under investigation and charges may be placed," Nunley said.

Witnesses said the car had a handicapped parking sticker and it went more than 100 feet before coming to a stop.

"He was hitting hikers," said Vickie Harmon, a witness from Damascus. "I saw hikers just go everywhere."

Amanda Puckett, who was watching the parade with her children, ran to the car, where she and others lifted the car off those pinned underneath.

"Everybody just threw our hands up on the car and we just lifted the car up," she said.

Keith Neumann, a hiker from South Carolina, said he was part of the group that scrambled around the car. They pushed the car backward to free a woman trapped underneath and lifted it off the ground to make sure no one else was trapped.

"There's no single heroes. We're talking about a group effort of everybody jumping in," he said.

Nunley cited quick action by police, firefighters, paramedics and hikers to tend to the victims, including a volunteer firefighter who dove into the car to turn off the ignition. The firefighter, whose name wasn't released, suffered minor injuries.

Mayor Jack McCrady encouraged people to attend the festival on Sunday, its final day.

"In 27 years of this, we've never had anything of this magnitude, and is it our job to make sure it doesn't happen again," he said.

McCrady said a donation fund was being set up to assist the injured, some of whom don't have medical insurance.

"We want to make sure they don't suffer any greater loss than they already have," he said. 

The New York college student who was shot during a home robbery early Friday was killed by police gunfire, officials said at a news conference Saturday.

Nassau Co. Police

Nassau County police on Saturday named 30-year-old Dalton Smith of Hempstead as the man who attempted to rob the off-campus home where Hofstra University junior Andrea Rebello was shot and killed.

According to NBC New York affiliate WNBC, Nassau County Police said Andrea Rebello, 21, was killed by police fire, not by the armed gunman attempting to rob the off-campus house where she lived with her twin sister, Jessica, and several other women.

Police identified Saturday the man allegedly involved in the home robbery as Dalton Smith, 30, of Hempstead.

According to WNBC, Rebello, a Hofstra University student, and Smith were both shot and killed as he was trying to back out of a rear door holding the woman in a headlock and pointing a gun to her head, police said. 

An officer fired eight rounds, seven of which hit the suspect and one that hit Rebello, police said, according to WNBC.

According to a police statement, officers responding to a robbery in progress arrived on scene at 2:30 a.m. to find Smith armed with a gun. Three female victims -- the two sister and a third woman -- and one male victim were held inside the home, according to police. Wearing a ski mask, Smith had forced his way inside the house, according to WNBC.

Smith allowed the third unidentified woman to leave, and she called 911, WNBC reported.

Police say Smith was on parole for robbery in the first degree and had an extensive criminal history that includes assault.

A warrant for his arrest was issued last month for absconding from parole.

Officials toured the scene of a two-train collision in Connecticut that injured dozens of people and halted rail traffic from New York to Boston on Friday.

Area hospitals reported seeing 70 people after the rush-hour collision. Two remained in critical condition on Saturday.

“The damage is absolutely staggering,” Sen. Richard Blumenthal told reporters on Saturday after a tour of the scene. “Ribbons on the sides of cars are torn away like ribbons of clothes. Tons of metal tossed around like toy things. The insides of cars are shattered.”

“We are fortunate that even more injuries were not the result of this very tragic and unfortunate accident,” Blumenthal said.

An eastbound Metro-North train derailed at 6:10 p.m. on Friday and was struck by a westbound train between the Bridgeport and Fairfield stations, National Transportation Safety Board member Earl Weener told reporters on Saturday.

Investigators from the NTSB arrived in Connecticut at about 9 a.m. on Saturday morning and planned to begin documenting the scene of the crash, Weener said. Investigators planned to spend between seven to 10 days on scene, and will conduct interviews with the train’s crew members, passengers, and witnesses.

“We will not be determining the probable cause of the accident while we’re here on the scene, nor will we speculate on what may have caused the accident,” Weener said.

Later on Saturday, investigators said they had zeroed in on a fractured part of the rail line as being of particular interest. It has not been determined whether that fracture happened before or as a result of the accident, they said.

The FBI is no longer a part of the investigation, authorities said.

St. Vincent Hospital in Bridgeport, Conn. said on Saturday that it saw a total of 44 patients, six of whom were admitted for treatment. All those patients remained in the hospital on Saturday and were reported to be in stable condition.

Bridgeport Hospital saw a total of 26 patients and admitted three. Two of those patients were in critical condition a day after the accident, and a third was being held for further treatment.

Passengers who were on the two trains described the rending collision in vivid terms.

“We came to a sudden halt. We were jerked. There was smoke,” passenger Alex Cohen, a Canadian who was riding the westbound train toward New York, told NBC Connecticut.

“People were screaming, people were really nervous,” Cohen said. “We were pretty shaken up. They had to smash a window to get us out.”

A female conductor helped other passengers evacuate the train despite herself sustaining back injuries, authorities said at a press conference late Saturday afternoon.

The Metro-North train that departs New York City’s Grand Central Station for New Haven, Conn., at 4:41 p.m., with an estimated 300 passengers, derailed near the I-95 overpass in Bridgeport, MTA said in a statement. The train that leaves New Haven’s State Street station for Grand Central at 5:30 p.m., carrying about 400 passengers, struck the derailed train, the statement said.

Amtrak service between New York City and New Haven, Conn. remained suspended on Saturday following the accident, Amtrak said in a release. Trains would not run through Sunday, and the train service said it could not give an estimate on when schedules may return to normal.

Amtrak service between New York, Philadelphia, and Washington, D.C., remained as scheduled, Amtrak said.

Metro-North, which runs between New York City and its northern suburbs in New York and Connecticut, is one of the busiest commuter rail services in the U.S. There are four tracks on that segment of the New Haven Line, an MTA statement said, but two are out of service for replacement of overhead wires.

There was "extensive damage" to the track and the wire from the collision, MTA said. The train cars will remain in place until the investigation is completed.

NBC News Carlo Dellaverson and M. Alex Johnson contributed to this report.

Related:

• 60 injured, five critically, as trains collide in Connecticut
  

This story was originally published on Sat May 18, 2013 11:31 AM EDT