Ariel Castro, 53, the Ohio man found guilty for the kidnapping and rape of three girls and holding them captive in his home for nearly a decade was found hanging in his cell Tuesday around 9:20 p.m.
Castro was housed at the Correctional Reception Center in Orient, OH, serving a life term without parole. He was in protective custody, in a cell by himself where rounds were required every 30 minutes.
Upon finding Castro hanging in his cell, prison medical staff began performing life saving measures.
Castro was transported to OSUMC shortly after and pronounced dead at 10:52 p.m.
"A thorough review of this incident is underway and more information can be provided as it becomes available pending the status of the investigation," a spokesperson from the Ohio Department of Rehabilitation and Correction said in a statement.
Castro was sentenced to life in prison without parole plus 1,000 years on August 1 for the kidnapping and rape of Michelle Knight, Amanda Berry, and Gina DeJesus.
He plead guilty to 937 counts including aggravated murder, kidnapping, rape and assault.
The women disappeared separately between 2002 and 2004, when they were 14, 16 and 20 years old. They escaped from Castro's home on May 6 when Berry broke through a door and yelled for help.