The Tennessee Highway Patrol is investigating a single vehicle fatal accident in Overton County. Troopers say 76-year-old Eric Carwile was driving a pickup truck south on State Route 84 when he failed to negotiate a curve. The vehicle went off the right side of the road and into a ditch, before striking a boulder and rolling twice. Carwile died as a result of his injuries. The accident report states Carwile was not wearing a seatbelt at the time of impact. The cause of the crash is under review by the highway patrol.