Authorities released a photo Monday of a man sought in connection with the weekend explosion in Manhattan that injured 29 people and continued to investigate whether a series of bombs found in New York and New Jersey were related.
The FBI released a wanted poster for Ahmad Khan Rahami, 28, a naturalized U.S. citizen of Afghan descent. His last known address is listed in Elizabeth, N.J., and the poster warns that Rahami "should be considered armed and dangerous."
Federal authorities were conducting a raid on Rahami’s apartment above a fried chicken restaurant.
ON MOBILE? This story is best viewed in a browser.
"This is someone who was likely involved in one way or another" with the explosion in the Manhattan neighborhood of Chelsea, New York Mayor Bill de Blasio told CNN's New Day. "We need to get this guy right away."
NBC News, citing a senior law enforcement official with direct knowledge of the investigation, said authorities believe Rahami is the man seen in surveillance footage Saturday night in Chelsea. Physical evidence links Rahami to explosive devices in New York and New Jersey, the source told NBC News.
The explosion happened in Chelsea, Manhattan, on Saturday. An unexploded pressure-cooker device was also found four blocks away and was being analyzed by the FBI. Earlier Saturday a pipe bomb exploded in a trash can in Seaside Park, N.J. No one was injured in that blast.
On Monday, a device found in a backpack near the Elizabeth train station exploded while a bomb squad robot was trying to disarm it, authorities said.
Bollwage said the FBI was attempting to disarm one of the devices when it exploded. There were no immediate reports of any injuries or damage.
“I’m extremely concerned for the residents of the community, but more importantly extremely concerned for everyone in the state and country where someone can just go and drop a backpack into a garbage can that has multiple explosives in it with no timers and then you have to wonder how many people could have been hurt,” Bollwage said.
FBI agents and police converged on an apartment near the train station at about 6 a.m., apparently a recent residence of Rahami.
NJ Transit services were suspended between Newark Liberty Airport and Elizabeth, and Amtrak trains to New Jersey were being held at New York Penn Station. Amtrak trains heading to New York were held in Trenton early Monday.
Passengers said they were stuck on trains for hours Sunday night. Amtrak said 2,400 passengers were affected.
A pipe bomb exploded in Seaside Park, New Jersey, on Saturday, about an hour from the Elizabeth train station. Authorities initially said the two incidents did not appear to be connected, but they weren’t ruling anything out.
Investigators didn’t immediately say whether they thought the Elizabeth incident was connected to the blast in New York.
FBI agents conducted a traffic stop Sunday just off the Verrazano bridge in connection to the New York explosion. As many as five people were detained after the traffic stop, according to ABC News and The New York Post.
Authorities said Sunday night that surveillance video shows what appears to be the same person moving bombs into place at the site of the New York explosion, and a few blocks north.
Mayor de Blasio said Sunday that people will see "a very substantial NYPD presence this week — bigger than ever."
The heightened alert comes as world leaders are gathering Monday for the United Nations General Assembly. President Obama is expected to attend the annual meeting Tuesday, the last of his eight-year tenure.
Contributing: Rick Jervis and Rich Cowen, the Associated Press