RUSSELLVILLE, TN (WBIR) -- An East Tennessee sheriff said a 13-year-old was defending himself and his family when he stabbed and killed a man.

It happened around 8:45 p.m. Monday in Russellville. The Hamblen County Sheriff's Office says when deputies arrived at the scene, they discovered Giorgio Armani Kyle had been stabbed in his stomach.

Deputies said a 13-year-old boy had stabbed Kyle during a fight between Kyle and the teen's aunts. They said Kyle had gone to the house to confront his girlfriend, Kelsey Jackson. According to statements, Kyle hit Jackson during the confrontation, and had hit her on other previous occasions.

Jackson's sister said she went to check on the couple when she heard arguing and was pushed by Kyle.

Read more from our news partner WBIR.