Attorneys in Michigan are preparing to file a wrongful death lawsuit against the state’s Department of Corrections over the death of prisoner who suffered from a bipolar disorder. According to the Detroit Free Press, Timothy Joe Sounders died after spending most of his last four days with his arms and legs strapped to a steel bed in four-point restraints in a hot isolation cell. He was naked and soaked in his urine. He was 21 years old. Authorities haven’t released an autopsy yet but one expert witness called it “death by torture.” The Michigan Department of Corrections initially told his family that he had died in his sleep. Sounders is at least the third mentally ill prisoner to die under similar circumstances in Michigan in recent years. Also expected to be sued in the case is Correctional Medical Services, the private company that handles health services in Michigan’s prisons.