At least one person is dead Saturday after a sightseeing helicopter and a small airplane collided in midair just before noon over the Hudson River, authorities said.
Debris from both aircraft fell on impact into the water between Manhattan and New Jersey.
Rescue divers are "searching for survivors and casualties" at the crash site, which is in the vicinity of West 14th Street in Manhattan between the island and New Jersey, said Paul Browne, the New York Police Department's chief spokesman.
Six people were aboard the helicopter, which belongs to Liberty Helicopter Sightseeing Tours, Browne said.
It was not clear who among the dead and the rescued were aboard which aircraft.