Police clear Los Angeles and Philadelphia encampments. NBC's Chris Clackum reports.
Updated at 3 p.m. ET: Police in Los Angeles proclaimed a successful and peaceful removal of the two-month-old Occupy LA encampment at city hall during a press conference on Wednesday morning.
"The world was watching… and what the world saw was an elegant operational plan that was brilliantly executed by America's finest police force," said Los Angeles Police Chief Charlie Beck.
NBC Los Angeles reports that there were at least 290 arrests in the overnight operation ending around 5 a.m. PT. The final holdouts at the encampment — a dog and three people in a tree house — were removed by officers using a Bomb Assault Tactical Control Assessment Tool — basically a souped-up forklift.
Updated at 9:00 a.m. ET: Los Angeles Police Lieutenant Andy Neiman said before officials raided the Occupy camp, some protesters had been reported to be storing human waste at the site for unknown reasons. He later said police entering the camp encountered "a horrible stench."
City workers put up concrete barriers to wall off the park while it is restored. As of 8:10 a.m. ET, the park was clear of protesters, said LAPD officer Cleon Joseph. Police used a cherry picker to pluck five men from trees. Two others were in a tree house — one wore a crown and another taunted police with an American flag.
Meanwhile, in Philadelphia, protesters swiftly vacated their camp without a single arrest, officials said.
Updated at 6:32 a.m. ET: At 6:09 a.m. ET, NBC Philadelphia reported that Occupy protesters were marching through the streets toward Rittenhouse Square. "Traffic is blocked" and "some of the city's mass transit has been halted," its website said.
Updated at 6:25 a.m. ET: Two Philadelphia police officers were taken to hospital with minor injuries following a "scuffle" with anti-Wall Street protesters while clearing the city's Occupy encampment, authorities told NBC Philadelphia.
Updated at 5:50 a.m. ET: Police arrested about two dozen roving marchers who left the Occupy Philadelphia encampment early Wednesday after officers evicted protesters, The Associated Press reported. Police began pulling down tents at about 1:20 a.m. ET after telling demonstrators they had to leave.
Los Angeles police officers cleared out the Occupy LA encampment early Tuesday morning. KNBC-TV reports.
Updated at 5:45 a.m. ET: Four injuries have been reported during the operation to clear the Occupy LA site, NBC Los Angeles said. Two people were transported to a local hospital but the extent of their injuries was not immediately known.
Updated at 4.45 a.m. ET: Occupy LA protester Opamago Cascini, 29, tells CNS why he's ready to go to jail: "It's easy to talk the talk, but you gotta walk the walk."
Updated at 4:33 a.m. ET: According to NBC Los Angeles, about 1,700 LAPD officers are on the scene as Occupy LA encampment is dismantled.
Updated at 4:20 a.m. ET: A LAPD public information officer tells KNBC's Conan Nolan that some cops are helping Occupy protesters to pack up their belongings. "Everybody is being very cooperative," the PIO added.
Updated at 4:13 a.m. ET: KNBC's Beverly White says a local church has opened its doors "to give sanctuary to the 99 percent."
Updated at 4:10 a.m. ET: In a statement, LA Mayor Antonio Villaraigosa says: "We have taken a measured approach to enforcing the park closure because we have wanted to give people every opportunity to leave peacefully. I ask that anyone who remains in the park to please leave voluntarily."
He says a "First Amendment area" will remain open on the Spring Street City Hall steps while the park is closed. "Once the park is cleared, it will be repaired and returned to all Angelenos to exercise their First Amendment rights," Villaraigosa added.
Updated at 12:45 a.m. ET: A raid on Occupy LA’s City Hall encampment appeared imminent Tuesday night as several local news sources reported that Los Angeles Police were gathering at Dodger Stadium.
The Los Angeles Times reported that Mayor Villaraigosa said he decided to evict the protesters after learning that children were staying in the camp.
"The chaos out there could produce something awful," he told The Times, because of reports of assaults and other incidents.
Occupy LA’s Facebook page said city buses would be staged near City Hall between 8 p.m. and 4 a.m., NBC station KNBC reported.
"This is a monumental night for Los Angeles. We're going to do what we can to protect the camp," said Gia Trimble, member of the Occupy LA media team on Monday night.
She said she thought a lot of people would stay and risk arrest, adding, "We're really committed to this."
Members of the National Lawyers guild had legal observers on hand for any possible eviction that may occur.
Meanwhile, in Philadelphia, Occupy protesters on Dilworth Plaza appeared to be complying with a final warning from police to leave.
A message posted on the police Twitter account, @Phillypolice, said the department "thanks #occupyphilly for their cooperation.
We're here to protect constitutional rights and ensure public safety."
The Associated Press contributed to this report.