4 New York Police officers seriously injured, taken to hospital, after their vehicle crashes into a small bus, causing both vehicles to burn.

Four people were seriously hurt in a fiery crash involving a bus and an NYPD vehicle Tuesday night in Brooklyn, officials say.

Crews were sent to the crash on Belmont Avenue in the East New York neighborhood shortly before 11 p.m., officials say. The police vehicle appeared to have been pinned under the bus, which caught fire.

All four victims were taken to the hospital in serious but stable condition, firefighters say. According to the NYPD, no civilians were hurt in the crash.

It wasn't clear what caused the wreck.