Unclear what happened during Army helicopter crash in Kentucky- official

The U.S. military said on Thursday that it was not clear what happened to two Black Hawk helicopters that crashed during night time training over Kentucky and killed all nine soldiers aboard.

Brigadier General John Lubas, Deputy Commanding Officer for Operations at the 101st Airborne Division, said it was not clear if the two helicopters had crashed into each other Wednesday night.

He added that one helicopter had 5 soldiers while the other one had four.