Ohio officials suggest in a new report it's possible Cleveland kidnapper Ariel Castro may have died of auto-erotic asphyxiation, not suicide, as previously suspected.

The report says Castro's pants and underwear were pulled down to his ankles when he was found. It also says Castro did not leave a suicide note.

The report also says two prison guards falsified logs documenting their observation of Castro in the hours before he killed himself. It says video indicates no checks were done on Castro at least eight times before he died.