"The status of the crew members are unknown at this time," officials said.
Two U.S. Army Black Hawk helicopters crashed during a training incident on Wednesday night in Trigg County, Kentucky, officials said in a statement.
"The status of the crew members are unknown at this time," Nondice Thurman, a spokesperson for the Fort Campbell Public Affairs Office, said in a statement. "The command is currently focused on caring for the servicemembers and their families."
The Black Hawk helicopters from the 101st Airborne Division were on a "routine training mission" when they crashed at about 10 p.m. local time, officials said.
An emergency vehicle is seen on near the site where two U.S. Army Black Hawk helicopters crashed on Wednesday, March 29, in Trigg County, Kentucky.
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Gov. Andy. Beshear of Kentucky said he received "early reports of a helicopter crash and fatalities are expected." The Kentucky State Police and Division of Emergency Management were responding, he said in a statement.
"We will share more information as available," Beshear said. "Please pray for all those affected."
Trigg County, where the crash occurred, is about 25 miles northwest of Fort Campell, a military installation on the Kentucky-Tennessee border.
ABC New's Ahmad Hemingway contributed to this story.