A passenger jet collided Wednesday with an Army helicopter while landing at Ronald Reagan National Airport near Washington, prompting a large search-and-rescue operation in the nearby Potomac River.

A PSA Airlines Bombardier CRJ700 regional jet collided with a Sikorsky H-60 helicopter, the FAA said. Reagan National Airport has grounded all flights.

An airplane collided with a military helicopter while trying to land at the Ronald Reagan Washington National Airport on Wednesday night, forcing all takeoffs and landings to be halted, officials said,