What we know so far about Washington DC plane crash

A passenger plane carrying 64 passengers and crew has crashed into a river in Washington DC after it collided in mid-air with a US Army helicopter.

Eighteen bodies have been pulled from the Potomac River so far, where search and rescue teams are scouring the waters in freezing temperatures, according to a police official who spoke to the BBC's broadcast partner, CBS News.

Authorities are investigating, and the nearby Ronald Reagan Washington National Airport has grounded all flights. read more