There are no survivors in the midair collision between a US Army Blackhawk helicopter and a passenger jet in Washington DC, a fire official said. Twenty-eight bodies have been recovered from the Potomac River.
"At this point we don't believe there are any survivors," Washington Fire Chief John Donnelly told a news conference at Reagan National Airport, outside the US capital. "We are now at a point where we are switching from a rescue operation to a recovery operation."
Mr Donnelly said 300 first responders had been involved in the operation - most of it conducted in pitch darkness.