More than two dozen people were injured in an explosion in the Chelsea neighborhood of Manhattan on Saturday, Sept. 17, 2016. The explosion was apparently connected to bombs found in New Jersey on Saturday and Sunday.
New York bombing suspect Ahmad Rahami after being shot in a gun battle with Linden, NJ police, Sept. 19, 2016.
Bombing suspect Ahmad Rahmani is seen with scenes from bombings in Seaside Park, Chelsea and Elizabeth.
A bomb found in Elizabeth, NJ on Sept. 18, 2016 explodes while the bomb squad attempts to disarm it.
Authorities search the space above a fried chicken restaurant in Elizabeth, NJ on Sept. 19, 2016 after a bomb was discovered nearby.
Members of the FBI investigate the scene the morning after the explosion. Officials believe there is no connection to the explosion that happened in Seaside Park, New Jersey, on Saturday morning.
Gov. Andrew Cuomo released a statement and said that his administration is "monitoring the situation". He also urged New Yorkers to "as always, remain calm and vigilant".
New York Gov. Andrew Cuomo, left, and Mayor Bill de Blasio walk towards the scene of an explosion on West 23rd street in Manhattan's Chelsea neighborhood, in New York, Sunday, Sept. 18, 2016, after an incident that injured passers-by Saturday evening.
Firefighters arrive at the scene of an explosion in Manhattan's Chelsea neighborhood, in New York, Saturday, Sept. 17, 2016.
NBC 4 New York
A law enforcement source said the explosion appeared to have come from a large construction-site toolbox on 23rd.
People stand behind police lines as firefighters, emergency workers and police gather at the scene of an explosion in Manhattan on Sept. 17, 2016 in New York City.
Police, firefighters and emergency workers gather at the scene of an explosion in Manhattan on Sept. 17, 2016, in New York City.
Mayor Bill de Blasio, center, and NYPD Chief of Department James O'Neill, left, react during a press conference near the scene of an explosion on West 23rd street in Manhattan's Chelsea neighborhood, in New York, Saturday, Sept. 17, 2016.
In this Saturday, Sept. 17, 2016, frame from video provided by Orangetheory Fitness Chelsea, a door shatters after an explosion in the Chelsea neighborhood of New York. Investigators scrambled Sunday to find out who planted a bomb that rocked Chelsea, scouring shrapnel, forensic traces and surveillance video.
A photo from the scene showed the toolbox blown apart, with bits of debris scattered on the street.
People try to access the area near the scene of an explosion on West 23rd Street and 6th Avenue in Manhattan's Chelsea neighborhood, in New York, early Sunday, Sept. 18, 2016.
Police officers look for suspicious packages along Fifth Avenue near the scene of an explosion on West 23rd Street and 6th Avenue in Manhattan's Chelsea neighborhood in New York, early Sunday, Sept. 18, 2016.
Law enforcement sources identify this pressure cooker, with wires and a phone attached, as the device found on 27th St. in Manhattan following an explosion on 23rd St. on Sept. 17, 2016.
Ted Greenberg, NBC 10
Pipe Bomb exploded in Seaside Park today in a trashcan.
Police at 23rd Street and First Avenue on Monday, just days after a bomb went off several blocks away.