Not convinced. While I don't think "satanism" is at the core of this. People who outsiders linked to that sort of thing, may have.
Joe Riedel put actual human skulls he obtained from a grave in a tree to scare little kids. Took teeth out of them to buy cigs and beer. Complete disregard for human life. Whatever you want to call that ****** up nonsense. Satanism or not. Is a possible precursor to abducting and murdering. At minimum it's psychopathic behavior. Which is a psych profile of someone who'd be involved in this crime.