Ronald Lee DeGrange, 44, was traveling north on Thurston Road when he left the road and struck a tree, according to a preliminary investigation by the Frederick County Sheriff's Office. Deputies arrived on the scene at about 6:18 p.m., and DeGrange was transported to Frederick Memorial Hospital. He was pronounced dead at the hospital, and the likely cause of death was injuries sustained in the crash, according to the sheriff's office.
The investigation is ongoing.