Technology that would have allowed air traffic controllers to better track the movement of an Army helicopter was turned off at the time of the crash, Sen. Ted Cruz, R-Texas, said in an interview Thursday.

The Army helicopter that collided with a passenger jet last week in Washington had its tracking technology turned off at the time of the crash, U.S. Senator Ted Cruz told the New York Times. The technology allows air traffic controllers to better track the movement of an aircraft.

Debris was removed from the Potomac River near Washington DC on Monday after two aircraft collided over the river on Wednesday night near the Ronald Reagan Airport.

All of the victims of last week’s plane and helicopter collision have been recovered. Read more trending news They were removed from the river on Tuesday, officials said, according to CBS News. American Airlines flight 5342 had 60 passengers and four crew members on it while the Army Black Hawk helicopter had three crew members on board.

The remains of all 67 victims of last week’s collision between an American Airlines regional flight and a U.S. Army Black Hawk helicopter have been recovered from the Potomac River.