Convicted killer and rapist Ariel Castro has been found dead in an apparent suicide.

The 53-year-old former bus driver was reportedly discovered hanging in his cell at the Correctional Reception Center in Orient, Ohio, on Tuesday night (Sep13).

Castro had spent the last four months behind bars, and was sentenced in August (13) to life in prison plus 1,000 years, with no chance of parole, for kidnapping Amanda Berry, Michelle Knight and Gina DeJesus and sexually assaulting them while keeping them captive in his home for more than a decade.

A statement from The Department of Corrections reads, "Upon finding inmate Castro, prison medical staff began performing life saving measures. Shortly after he was transported to Osumc where he was pronounced dead at 10:52 pm. A thorough review of this incident is underway and more information can be provided as it becomes available pending the status of the investigation."