A Lithia Springs man is accused of entering his ex-girlfriend’s apartment and stabbing to death the man sleeping in her bed, according to Cobb County police.

Rendell Russell went into the Sierra Forest apartment on Mableton Parkway between 4:30 a.m. and 5 a.m. Tuesday, his arrest warrant states. Officers were called to the home on a report of a shooting, Officer Shenise McDonald said Wednesday.

“However, the victim’s injuries appeared to have been caused by a sharp force instrument,” McDonald said in an emailed statement.

The critically injured man was taken to Grady Memorial Hospital where he died from his injuries, McDonald said. Investigators later determined the man, identified as Gregory James, had been stabbed.

“Said accused did attack said victim with a knife causing said victim’s death,” Russell’s warrant states. “Said accused’s ex-girlfriend witnessed the murder.”

Russell, 28, was arrested later Tuesday morning and charged with murder and aggravated assault, Cobb jail records show. He was being held without bond Wednesday.

The investigation into the death is still underway, according to police. No further details were released.