FORT LEAVENWORTH, Kan. — Fort Leavenworth officials are investigating after a civilian employee at the Army post died after being hit by a train.

A spokesperson for Fort Leavenworth said the employee was outside driving a front-end loader tractor around 2 p.m. Tuesday near the Sherman Army Airfield.

Officials said a Union Pacific train collided with the tractor near Chief Joseph Loop and Rialto Road. The railroad company also owns the railroad tracks, according to the Kansas Department of Transportation.

The civilian worker was taken to the hospital by helicopter where he later died of his injuries Tuesday afternoon. The man has been identified as 28-year-old Cody Clark.

“The Fort Leavenworth community is deeply saddened by the loss of Cody Clark” Col. John Misenheimer, Garrison Commander of Fort Leavenworth, said in a statement. “His absence will be felt throughout our entire Fort Leavenworth family. We extend our deepest condolences to his family and friends during this difficult time.”

Fort Leavenworth and Union Pacific officials are investigating. A Fort Leavenworth spokesperson initially said the National Transportation Safety Board was investigating the crash, but on Wednesday, the federal agency said it is not.