The man who kidnapped, raped and held three women in his Ohio home for about a decade killed himself in prison Tuesday. A timeline of key events:
— Aug. 23, 2002: Michelle Knight, 20, vanishes.
— April 21, 2003: Amanda Berry, 16, disappears a few blocks from her home.
— January 2004: Police go to Ariel Castro's home but no one answers the door. Child welfare officials had alerted police that Castro, a school bus driver, apparently left a child unattended on a bus. Police later spoke to Castro and determined there was no criminal intent.
— April 2, 2004: Georgina "Gina" DeJesus, 14, disappears while walking home from school.
— Dec. 25, 2006: Berry gives birth to a daughter fathered by Castro.
— November 2011: A neighbor, Israel Lugo, said he heard pounding on some of the doors of Castro's house, which had plastic bags on the windows. Lugo said police officers knocked on the front door, but no one answered. Officers walked around outside the house and left, Lugo said.
— May 6, 2013: Knight, Berry, DeJesus and Berry's 6-year-old daughter are found at Castro's home after Berry yells to neighbors for help. Castro is arrested.
— July 9, 2013: In a video posted online, the three women thank supporters and say they're glad to be home.
— July 26, 2013: Castro avoids the death penalty by pleading guilty to 937 counts in a deal that sends him to prison for life without parole, plus 1,000 years.
— Aug. 1, 2013: At a sentencing hearing, Castro apologizes briefly but claims most of the sex was consensual and the women were never tortured. Knight makes a statement, telling him, "I spent 11 years in hell. Now your hell is just beginning."
— Aug. 7, 2013: Workers demolish Castro's house as part of his plea deal.
— Aug. 19, 2013: In an interview published by the Cleveland Jewish News, Castro's lawyers say he fits the profile of sociopathic disorder and they hope researchers could study him for clues to help stop other predators.
— Sept. 3, 2013: Castro is found hanging in his prison cell. Authorities say he committed suicide.