Kentucky's governor said the crash between two military helicopters may have killed people. Both U.S. Army Black Hawk aircraft crashed during a routine training mission in the state on Wednesday night.

The status of the crew members has not yet been announced, the military said in a statement, without making public how many people were on board.

"We have difficult news from Fort Campbell, with the first reports of a helicopter crash and deaths expected," Gov. Andy Beshear said in a post on Twitter, adding that local authorities and emergency services were responding to the crash.

The crew members were flying two HH-60 Black Hawk helicopters, operated by the 101st Airborne Division, which crashed around 10:00 p.m. ET (0200 GMT Thursday) in Kentucky's Trigg County, Fort Campbell's base announced.

"The command is focused on serving families," the statement said, adding that the cause of the crash was under investigation. The HH-60 is a variant of the Black Hawk helicopter designed to support various military operations, including airstrikes and medical evacuations, according to the Army.

According to The Trust Project criteria

Learn more