Callum B. McKerr, 21, of Fort Campbell, was pronounced dead Sunday morning, after his vehicle struck a tree on Silver Trail Road in Lyon County some time between midnight and 5 a.m., according to Kentucky State Police Post 1 in Mayfield.

McKerr was the only occupant of the vehicle.

Another motorist discovered McKerr’s 2018 Subaru Impreza, which had been traveling eastbound, and reported the situation to state police. A KSP news release indicated the reason for the collision is unknown.

The investigation continues. Assisting KSP at the scene were Lyon County Emergency Management Services, the Lyon County Coroner’s office, the Grand Rivers Fire Department, and the U.S. Forest Service.