I've heard Brazilian prisons are as bad as any on earth. I wonder why a sicko like this wouldn't have just killed himself before being locked up, then again I wonder why he wouldn't have done the same thing instead of raping and killing a baby in the first place

As Gandalf says though, it is pretty messed up that this was allowed to happen. Hate to imagine how often it happens to much less deserving inmates, even people who are simply mentally ill etc.