I thought once his dad moved out he had a hands off relationship with the killer. Well, actually the guns were the killer. The kid just happened to be there and was in no way responsible for the travesty.
He may have been hands off - but why? Was the boy suddenly not his child? This whole story reminds me of when people are interviewed after a killing spree and say something like “he was a nut, we always expected this to happen” - yet they didn’t alert anyone or see if anyone could help the “nut”. I’m not blaming others, just saying standing back and waiting for someone who is mentally ill to do the deed is disgraceful.