Witnesses told investigators that Ferguson had tried to attack his son with a chainsaw while the victim was mowing the yard at a residence off of Highway 421.

Bristol, Tenn. — A police report released Thursday says a Bristol man had to defend himself from his father by running over him with a lawnmower.

Witnesses told investigators that Ferguson had tried to attack his son with a chainsaw while the victim was mowing the yard at a residence off of Highway 421.

Ferguson was found at the scene bleeding from his head and leg- injuries.

Douglas Ferguson, 76, was charged this week with attempted second degree murder related to the June 28 encounter, according to the statement from the Sullivan County Sheriff's Office.