The New York Fire Department said it had pulled people out of the wreckage in Upper East Side in New York.
At least two deaths have been reported.
At least two people are feared dead after a construction crane collapsed in Manhattan, smashing into a block of flats before crashing more than a dozen storeys onto the street below.
The top floor of a nearby high-rise apartment building was damaged.
Rescue workers are continuing to search through the wreckage.
The accident comes just two months after four people were killed in a similar accident when a crane crushed a block of flats in New York.