Officials say the conditions of the Potomac River are complicating recovery efforts of the bodies of the 67 presumed dead in a mid-air collision between American Airlines flight 5342 from Wichita and a military Black Hawk helicopter.

Crews are searching for survivors after an American Airlines regional jet and a Black Hawk helicopter crashed last night.

A small aircraft is down in the Potomac River near Ronald Reagan Washington National Airport and fireboats were on the scene, the Washington fire department said. The airport said late on Wednesday that all takeoffs and landings were halted at the airport as emergency personnel responded to an aircraft incident.