An American Airlines regional passenger jet was involved in a mid-air collision on Wednesday night with a U.S. Army Black Hawk helicopter near Reagan Washington National Airport, officials said.

There was no immediate word on casualties, but all takeoffs and landings from the airport near Washington were halted as helicopters from agencies across the region flew over the scene in search of survivors.

An airplane collided with a helicopter while trying to land at the Ronald Reagan Washington National Airport on Wednesday night, officials said.