Castro was arrested that evening. He had also fathered a child with Berry while she was in captivity; that girl was 6 years old when freed. A judge rejected Castro's request to have visiting rights with his daughter.
Elation over the women's rescue soon turned to shock as details emerged about conditions of their captivity. Investigators say they were bound with chains, repeatedly raped and deprived of food and bathroom facilities. Knight told investigators she was beaten and starved several times to force her to miscarry.
Messages left for the women's lawyers were not immediately returned early Wednesday.
Castro was sentenced Aug. 1 to life in prison plus 1,000 years on his guilty plea to 937 counts including kidnapping and rape.
In a rambling statement, he told the judge he was not a monster but a man suffering from a pornography addiction.
"I'm not a monster. I'm sick," Castro said at his sentencing.
Knight was the only one of the three who appeared in court at his sentencing.
"You took 11 years of my life away, and I have got it back," she said in the hushed courtroom. "I spent 11 years in hell. Now your hell is just beginning."
Castro was in protective custody because of the notoriety of his case, meaning he was checked every 30 minutes, but was not on suicide watch, Smith said. She said suicide watch entails constant observation.
Castro was also watched closely in the Cuyahoga County Jail in the several weeks after his arrest and before his case was resolved by a guilty plea, with logs noting his activity every 10 minutes. He was taken off county jail suicide watch in early June after authorities determined he was not a suicide risk.
This is the second high-profile suicide in an Ohio prison in a month.
On Aug. 4, death row inmate Billy Slagle was found hanged in his cell just days before his scheduled execution. He was condemned to death for fatally stabbing a neighbor.