Definitely, the whole thing was inspired by Islamic teachings. But the father may be right: the kid was too young to acquire those weapons legally and doesn't sound as if he hung out with gang-bangers or others who would have had a ready supply. According to official Muslim representatives, the killer had nothing to do with local mosques, but one of the killer's friends, in an unguarded moment, said he regularly went to prayers at something called the Al Noor mosque. So that sounds like a good place to begin.