Investigators have recovered most of the airplane and helicopter from the Potomac River, but continued searching for objects on the river floor.

President Donald Trump posted on social media overnight, "This is a bad situation that looks like it should have been prevented." Asked about Trump’s comments, Transportation Secretary Sean Duffy told reporters Thursday,

At least 30 bodies have been pulled from the crash scene in the Washington DC area after a passenger plane collided in mid-air with a helicopter, according to the BBC's US partner CBS News. The plane was carrying 64 passengers and crew when it landed in the Potomac River after the collision.

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter collided midair and crashed into the Potomac River near Reagan Washington National Airport on Wednesday night. Officials have not provided a death toll but said all passengers and crew on both flights were feared dead.

More than a week after the horrific helicopter-plane collision near Washington, salvage crews have recovered most of the wreckage.

PMAll 67 bodies identified, wreckage recovery continuesAll 67 bodies have now been identified, the Unified Command said Wednesday, and the medical examiner's office is working to "ensure the dignified return of remains to their families and continue supporting the families through this process.

On Thursday, crews removed all large major components of the American Airlines jet and military Black Hawk helicopter, which collided in a deadly incident near Reagan National Airport last week.

While on Capitol Hill on Thursday, the National Transportation Safety Board chair gave a brief update on the investigation into last week's deadly midair collision near Washington, D.C. CBS News senior transportation correspondent Kris Van Cleave has more on the recovery efforts.