Dozens of people were injured Saturday night in the Chelsea neighborhood of Manhattan in an explosion that New York Mayor Bill de Blasio called “an intentional act.”

Mayor de Blasio said the explosion did not appear to be a terrorist threat.

The blast happened in the Manhatten area of the city.

Authorities say that none of the injured are in a serious condition.

It has also been reported that a second device has been found four blocks away from the scene.

This device appeared to be similar to a pressure cooker and had wiring on it, according to  police reports. Pressure cookers were used in two bombs detonated at the Boston Marathon in 2013.

The New York Police Counter-Terrorism unit responded to the blast and transit service in the area was shut down, according to the New York Fire Department.