Then the mother had to have been off her medications also ---- and is probably just as likely a suspect in this murder. No sane woman is going to invite home a man like that who runs around naked proclaiming he's God, to spend time in her child's home.
There's one at this link as well as a pic of the victim.
There's more info on the suspect too.
Seems as though he was high on Angel Dust when he killed his sister. This guy needs an Express Pass to Death Row.