Investigators searching for wreckage from last week’s deadly midair collision between a US military Black Hawk helicopter and an American Airlines plane near Washington, DC, conducted an overnight scan of the Potomac River where the aircraft fell using advanced imaging technology to map the riverbed and locate debris.

The remains of all 67 victims of last week's midair collision of an American Airlines flight and an Army helicopter near the nation's capital have been recovered, authorities said Tuesday. All but one has been identified.

Investigators trying to determine what caused last week’s deadly midair collision between a US military Black Hawk helicopter and an American Airlines plane near Washington, DC, briefed lawmakers Thursday on what they’ve learned after combing through data from both aircraft and air traffic control.

All major parts of the plane and Black Hawk helicopter involved in a mid-air collision in Washington DC have been recovered.

American Airlines aircraft and US Army helicopter collided in mid-air in Washington DC. Investigators recovered all of the victims in the Potomac River