One US soldier was killed and three others wounded in Louisiana on Thursday morning when a Black Hawk helicopter crashed, according to a new report.

The Army UH-60 aircraft — part of the 1-5 Aviation Battalion — was flying out to recover a soldier with a heat-related injury on the training ranges at the Fort Polk base when it plummeted, the Army Times reported.

The three wounded soldiers are listed in stable condition, Kim Reischling, a Fort Polk spokeswoman, told the outlet.

“One of their biggest missions on Fort Polk is to fly medevac and they were on their way to pick up a routine injury out in the training area,” Reischling said. “There are accidents out there, minor ones, soldiers get overheated, soldiers sprain their hands, stuff like that.”

The cause of the crash was not immediately known and personnel are investigating, according to Reischling.

The deceased soldier’s identity will be released Friday. Loved ones have been notified, according to the report.