NYC Explosion

Police respond to a report of an explosion near Times Square on Dec. 11, 2017, in New York.

Fire Department of New York (FDNY) firefighters stand near Port Authority Bus Terminal after reports of an explosion in Manhattan, New York, U.S., Dec. 11, 2017.

A crowd moves past police responding to a report of an explosion near Times Square on Dec. 11, 2017, in New York.

Commuters exit the New York Port Authority in New York City, U.S. Dec. 11, 2017 after reports of an explosion.

Police and fire crews block off the streets near the New York Port Authority in New York City, U.S. Dec. 11, 2017 after reports of an explosion.

Police block off a sidewalk while responding to a report of an explosion near Times Square on Dec. 11, 2017, in New York.

People walk past Port Authority Bus Terminal as police respond to a report of an explosion near Times Square on Dec. 11, 2017, in New York.

Police officers stand outside the New York Port Authority Bus Terminal in New York City, U.S. Dec. 11, 2017 after reports of an explosion.