TODAY | October 11, 2013
>>> new questions this morning about the cleveland kidnapper ariel castro 's suicide. natalie has those headlines.
>> that's right. good morning. the death of ariel castro found dead in his cell last month, a just released report suggests the death may not have been a suicide and questions remain about why he wasn't being watched more closely while in his prison cell .
>> reporter: convicted cleveland kidnappers ariel castro was discovered hanging by a bed sheet september 3rd , just weeks into his mandatory life sentence .
>> i'm not a monster. i did not prey on them.
>> reporter: revelations in a ohio department of corrections report now suggest the death may not have been suicide but possibly the result of accidentally choking himself during a sex act in his cell. the report also alleges two guar guar guards falsified documents as to when they checked on castro .
>> he was arrested in may of holding three young women in his home for more than a decade. after his cell, michelle knight said life behind bars was the best punishment.
>> you don't deserve that. you deserve to spend life in prison .
>> reporter: while he did elude to taking his own life in a 2004 letter no suicide note was found in his cell. only a few pictures and an open bible. nbc news, chicago.