A passenger plane collided with a helicopter while landing in Washington and crashed into the Potomac River. All flights were grounded.

The crash involved a PSA Airlines regional flight, which collided with a helicopter over Washington as it was about to land around 21:00 (02:00 GMT Thursday) at Ronald Reagan Airport, according to the US aviation regulator (FAA).

American Airlines told CNN Wednesday evening that 60 passengers and four crew members were on board the plane that crashed near Reagan National Airport.