CLEVELAND - Ariel Castro committed suicide using a bed sheet, according to the Ohio Department of Rehabilitation and Corrections.
The Franklin County Coroner's Office said Castro's autopsy is complete. They confirmed the cause of death as hanging and manner as suicide.
ODRC said Castro's cell was 8 feet by 12 feet and contained a single bunk.
He was allowed a uniform, bed sheet and hygiene products.
Castro was pronounced dead at Ohio State University Medical Center after he was found hanging in his prison cell Tuesday night.
He had been housed alone at the State Correctional Reception Center in Orient, Ohio, south of Columbus, where he was in protective custody and checked every 30 minutes.
Jaye Schlachet, Castro's attorney, released a statement Wednesday morning:
"We requested the opportunity for a forensic psychologist to evaluate Ariel Castro when he was in county jail and the state's prison reception center. Local and state authorities denied our requests. There is an institutional failure beyond Ariel Castro and the citizens of Ohio are entitled to something better. It's just sad."
Castro was sentenced to life in prison without parole, plus 1,000 years after accepting a plea deal.
Three missing women, Amanda Berry, Michelle Knight and Gina DeJesus, were found alive in his home after nearly a decade of being held captive and sexually abused.