Aerial video shows crews at site of collapsed building in New York

Aerial video shows dozens of first responders scouring debris at the site of a collapsed three-storey building in the Flatbush neighbourhood of Brooklyn, New York. Rescuers are searching for people trapped under the rubble, according to the New York City Fire Department (FDNY).

Four people were injured and at least one is in critical condition, according to the BBC's US partner, CBS News.

Footage from the ground also shows exposed bedrooms and stairwells in a neighbouring building following the collapse.