murder of his daughter, valerie hamilton. >> a suspect was arrested in western new york in the case but in the days since her murder there are still many questions. yunji de nies reports. >> this is not a murder. there's no murder at all. she overdosed in her sleep. >> she didn't sound like she was on anything. she didn't sound like she was drunk. >> he woke up and she was dead. >> what do you think happened that night? >> you know, i don't know. we may never know. we may never know what happened. >> reporter: what concord police chief merl hamilton does know, his daughter valerie was found dead in this storage locker after a late night with michael neil harvey, a registered sex offender with a lengthy criminal record, including rape, breaking and entering, and drug possession. >> do you think that he killed your daughter? >> i don't know. i don't know enough about it to say that. i think if he wasn't with my daughter that night, she would be alive.