( CNN ) -- Convicted kidnapper Ariel Castro killed himself , the Ohio medical examiner who conducted his autopsy says , disputing assertions that the convicted kidnapper and rapist may have died accidentally . Coroner Jan Gorniak had harsh words for Ohio corrections officials for raising the possibility in a report Thursday that Castro 's death may have been the accidental result of auto-erotic asphyxiation . That involves depriving the brain of oxygen by controlled strangulation to intensify a sexual experience . `` I did the autopsy myself . I saw the ligature . I saw the pictures of the cell , '' she said . `` It was a suicide . '' The state report released Thursday , meanwhile , also found that prison guards falsified logs and did not check on Castro as often as they should have . They appeared to have also falsified `` the post log book for their rounds , '' according to the report , from the Ohio Department of Rehabilitation and Correction . The guards were placed on leave as authorities looked into Castro 's death . Investigators have not decided on whether to take any disciplinary action . As for the report 's mention of the possibility that Castro 's death was accidental , the coroner said no one involved in the report consulted her -- and she 's not happy about that . `` They were outside of their lane ... I do n't think anyone else should have an opinion on what the cause of death was , '' Gorniak said . In its report , the Ohio Department of Rehabilitation and Correction noted that Casto 's body was found hanging from a sheet wrapped around his neck and tied to a hinge in the window of his cell . `` His pants and underwear were pulled down to his ankles , '' the report said . `` The relevance of this finding is unclear . These facts , however , were relayed to the Ohio State Highway Patrol for consideration of the possibility of auto-erotic asphyxiation . '' Gorniak said she was not made aware that Castro was found with his pants down in the jail cell , but that does not change the cause of death . There were no signs that he was sexually stimulated , she said . And his pants may have slipped off while he was hanging , she said . He left no suicide note , the report said , but not everyone who commits suicide does , the coroner said . Ariel Castro 's son describes personal torment after father 's crimes . Castro was imprisoned for more than 1,000 years for kidnapping and raping three women who he held in captive in his Cleveland home for years . He was found dead in his jail cell on September 3 . Meanwhile , the report released Thursday also said that two prison guards responsible for checking on Castro `` did not timely perform '' required rounds .
Coroner who performed Castro 's autopsy says Ariel Castro 's killed himself . She is dismissing a state report suggesting that Castro 's deat may been an accident . The Ohio kidnapper pleaded guilty in last month and hanged himself August . Castro 's body was found with an open Bible and pictures of his family .