The FBI is looking for an "armed and dangerous" man in connection to Saturday's New York and New Jersey bombings.
Ahmad Khan Rahami, 28 is wanted for questioning over the explosion in Manhattan that left 29 wounded, and one in New Jersey that did not injure anyone.
The Manhattan bomb was placed in a busy, fashionable area of New York. It originated from a device placed in a pressure cooker outside the Associated Blind Housing facility at 135 West 23rd Street. A second device was found four blocks away on West 27th Street.
Earlier in the day on Saturday there was an explosion at Seaside Park, New Jersey - 83 miles away - which was timed to disrupt a Marine Corps charity run.
Through social media the FBI was asked for assistance in locating Ahmad Khan Rahami, "who is wanted for questioning in connection with an explosion that occurred on September 17, 2016, at approximately 10:14 a.m. in the vicinity of Ocean Ave., Seaside Park, NJ and on September 17, 2016, at approximately 8:30 p.m. in the vicinity of 135 West 23rd Street , New York, NY."
He is described as a United States citizen of Afghan descent born on January 23, 1988, in Afghanistan.
Police said he last known address was in Elizabeth, New Jersey. The FBI also said he was considered armed and dangerous.
Five suspicious devices were found in a backpack near a train station on Sunday night, in Elizabeth, New Jersey as suspicion grows that a terror cell may be behind the attacks.
One of five suspicious devices in the backpack exploded as the FBI attempted to disarm it with a robot, international media reports.
On Sunday night federal authorities detained five people with possible links to the bombing in Chelsea district of Manhattan. However, the FBI tweeted no one had been charged.
Law enforcement officials told CNN on Monday morning that they were investigating a possible terror cell operating between New York and New Jersey, while New York governor Andrew Cuomo said a there may be a 'foreign connection' to the attack.
Media reports have said hours after the New York bombing police were phoned warning that were would be more attacks.
Both bombs in New York were filled with shrapnel and made with pressure cookers, flip phones, Christmas lights and explosive compound, The New York Times reported.