Ahmad Khan Rahami Identified As Suspect In Manhattan Explosion

Suspect could be armed and dangerous, New York City mayor said.
Several people were detained late Sunday in connection with the bomb.
29 people injured in the blast have been treated and released from the hospital.
Police reportedly found a second device, described as a pressure cooker bomb, nearby.

Ahmad Khan Rahami, 28, has been identified as a suspect in the Saturday night explosion in Manhattan that injured 29 people.

He could be armed and dangerous, New York City Mayor Bill de Blasio (D) said Monday, warning citizens of New York to be vigilant in looking for Rahami and report any sightings to authorities.

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De Blasio told CNN s New Day that Rahami, who is of Afghan descent, is a naturalized U.S. citizen. The FBI was searching a building at Rahamis last known address in Elizabeth, New Jersey, on Monday.

They will be there for the next few hours, going through this location to find any evidence possible, whether its in relation to this incident or the Chelsea incident, Elizabeth Mayor Christian Bollwage told CNN.

An emergency alert was sent to cellphone users in the New York City area, telling residents to Call 9-1-1 if seen.

New York Gov. Andrew Cuomo (D) said the Chelsea bombing was clearly an act of terrorism, and said its possible there was a foreign connection to the act. As of Monday morning, no global terrorist groups have claimed responsibility for the blast.

A bomb going off is, generically, linked to terrorist activity. And thats how were going to prosecute it, Cuomo said Sunday, speaking from the site of the blast.

Several people were reportedly taken into custody late Sunday in connection with the explosion. New York state Sen. Marty Golden (R) wrote on Instagram the FBI took several individuals into custody on the Belt Parkway in the area underneath the Verrazano Bridge.

The New York Times said the FBI had taken five people to its office in Manhattan for questioning , and that some or all may be from the same family. However, the agency told the newspaper no one has been charged with any crime.

The city was under heightened security and an increased police presence following the explosion, which prompted an investigation into a potential terror link, officials said.