The wreckage of a military helicopter involved in a mid-air collision with a passenger jet that killed all 67 people on both aircraft was recovered Thursday from the Potomac River, federal officials said.

Crews working at the site of the deadliest aviation disaster in a generation have recovered all 67 victims of the collision between two aircraft over the Potomac River in Washington, DC, officials said Tuesday.

Salvage crews have recovered the last large pieces of aircraft wreckage from the Potomac River on Thursday and are focusing on collecting small pieces from the crash site where 67 died.