The Augusta Chronicle reports that a man has been jailed for beating his 92-year-old grandmother to death.

According to authorities, Theodore “Ted” Cornell Lockett, 21, once lived with his grandma, Dorothy Lockwood, in her Apache Trail home.

Police say Lockett returned to the home in the early hours of Sunday morning. He broke out a window and confronted his grandmother in the living room. Lockett began assaulting her, knocking her to the floor and striking her several times in the head with a glass table.

Lockett then called his mother, Sondra Lockett, around 2 a.m. and told her he’d just killed his grandmother and was going to kill her, according to the police report. He went back inside the home and resumed his attack on the elderly woman, beating her with a microwave oven.

When police arrived, Lockett surrendered without incident inside the home. Mrs. Lockwood died from her injuries at 5 a.m. Sunday. Another woman in the home was uninjured. She was bedridden and being cared for by Lockwood.

Lockett had been treated at a behavioral health facility in the past, but he has no psychiatric diagnosis.

He was booked on charges of murder, aggravated assault, burglary and making terroristic threats.