Deadly Building Explosion in Harlem, New York

Emergency workers respond to the scene of an explosion that leveled two apartment buildings in Harlem, New York, March 12, 2014.

Firefighters respond to an apartment building explosion in Harlem, New York, March 12, 2014.

Police respond to the scene of an explosion and building collapse in Harlem, New York, March 12, 2014.

Firefighters respond to a fire in Harlem after a building exploded, March 12, 2014.

Alecia Thomas, left, is comforted by her friend, Shivon Dollar, after she lost her home following an explosion in Harlem, New York, March 12, 2014.

People run after an explosion and building collapse in Harlem, New York, March 12, 2014.

Rescue workers remove an injured person on a stretcher after a building collapse in Harlem, New York, March 12, 2014.