Police and firefighters work near to the scene of explosion in Manhattan, New York, Sept. 17, 2016. Police spokesman J. Peter Donald said on Twitter that the explosion happened at about 8:30 p.m. on West 23rd Street in the Chelsea section of Manhattan.
Onlookers stand behind a police cordon near the site of an explosion in the Chelsea neighborhood of Manhattan, New York, Sept. 17, 2016.
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, Sept. 17, 2016.
A fire crew works at the scene of an explosion in New York's Manhattan borough, Sept. 17, 2016. (C. Mendoza/VOA)