A 23-year-old Lucas man died in a one-vehicle accident late Saturday night in Ashland County’s Mifflin Township.   The incident happened around 11:00 PM on State Route 603. The State Highway Patrol says that the man apparently missed a curve and overturned in a ditch. He was reportedly not wearing a seatbelt and was pronounced dead at the scene. A 21-year-old female passenger was taken to a nearby hospital with non life-threatening injuries.