Authorities in Tennessee say an elderly man was seriously injured when he was hit by a riding lawnmower during a domestic disturbance earlier this year.

According to the Herald Courier, 76-year-old Douglas Ferguson was wielding a chainsaw when he attempted to kill his son at a home in Bristol in June.

He was found at the location bleeding from his head and legs, a statement from the Sullivan County Sheriff’s Office indicates.

The father and son had long had an acrimonious relationship, according to authorities.

Since the incident, police say the suspect underwent recovery for extensive injuries requiring the amputation of one leg.

He was ultimately arrested this week on suspicion of attempted second-degree murder as well as violating his probation in relation to a previous aggravated assault.

“The son defended himself against the attack by running over the suspect with the lawn mower,” the sheriff’s office reported. “The injuries that the suspect (Ferguson) sustained were as a result of the lawn mower striking and running over him.”

The alleged victim was mowing the lawn when detectives say the suspect chased after him with a running chainsaw.

Ferguson’s son responded to the threat by driving the mower over his father’s body, according to reports.

While a warrant for the suspect’s arrest had been previously authorized, treatment of his injuries and lengthy convalescence required a delay in its enforcement.

As of the latest reports available, Ferguson remained behind bars with bond on the attempted second-degree murder charge set at $25,000.

[Featured image: Douglas Ferguson, handout]