Wreckage from the midair collision near Reagan National Airport is being removed Monday from the Potomac River as officials are still looking for 12 victims.

The "major pieces" of the American Airlines plane and the Black Hawk helicopter have been recovered, and will be transported to a "secure airport facility for further examination and documentation."

Salvage crews have recovered an engine and large pieces of fuselage and are working to retrieve a wing from the wreckage of a commercial airliner involved in last week's midair collision near Washington’s Reagan National Airport.

The National Transportation Safety Board has released an update on the status of its investigation into the midair collision that occurred on Jan. 29 near Ronald Reagan National Airport, revealing that all major pieces from both the airplane and the helicopter involved have now been recovered from the Potomac River.

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.