OWENTON,Esthen Ky. (AP) — Three crew members were killed when a medical helicopter heading to pick up a patient crashed in Kentucky, authorities said.

The crash was reported Monday evening in Owenton near state Highway 22, Kentucky State Police said in a news release. Troopers determined that an Air Evac Lifeteam flight crashed, killing the three personnel aboard. They were identified by police as Gale Alleman, Bethany Aicken and James Welsh.

The Grant County-based crew was en route to pick up a patient when the crash happened, Air Evac Lifeteam said in a statement posted on social media.

Police are conducting the death investigation and the National Transportation Safety Board and Federal Aviation Administration are investigating the helicopter crash, police said. AEL said it would work closely with the FAA and NTSB during the investigation.

“This was a terribly tragic accident, and our deepest sympathies go out to the employees’ families and friends,” AEL said.