Convicted Cleveland kidnapper and rapist Ariel Castro has died after he was found hanged in his prison cell, Ohio Department of Corrections confirmed to ABC News.

Castro, 53, was found hanging in his cell at Correctional Reception Center in Orient, Ohio, Tuesday night at approximately 9:20 p.m. local time, corrections spokeswoman JoEllen Smith said.

Upon finding Castro in his cell, facility staff tried to resuscitate him, according to Smith. Castro was taken to Ohio State University Medical Center and was pronounced dead at 10:52 p.m.

See the Evidence from the Ariel Castro Kidnapping Case

'Inmate Ariel Castro was found hanging in his cell this evening at 9:20 p.m. at the Correctional Reception Center in Orient. He was housed in protective custody which means he was in a cell by himself and rounds are required every 30 minutes at staggered intervals,' Smith said in a statement.

'A thorough review of this incident is underway and more information can be provided as it becomes available pending the status of the investigation,' the statement concluded.

Castro was sentenced to life in prison without parole plus 1,000 years by an Ohio judge Aug. 1. Castro, a former school bus driver, kidnapped Michelle Knight, Amanda Berry, and Gina DeJesus between 2002 and 2004 and imprisoned them, sometimes restrained by chains, in his Cleveland home.

Castro pleaded guilty.