A Bradenton woman is accused of aggravated manslaughter in the death of her 4-year-old son. Authorities say 32-year-old Dianna Marr and her 25-year-old boyfriend Trevor Cardarelle face charges in the death of Alexander Marr. He was found dead in a bedroom of his home on April 12. His mother was arrested Thursday. The Manatee County Sheriff’s Office says Cardarelle was arrested April 12 on a probation violation charge after authorities learned there was a loaded gun inside the apartment. He’s also charged with capital sexual battery of another child. Both are being held without bond. Investigators say the child suffered a fractured skull and lacerated liver. Neither the Department of Children and Families nor the sheriff’s office reported prior involvement at the home.