I am curious as to how his name became known to the police in the last week or so. He was completely off the radar before then.
By far the most fascinating, in fact the only, explanation I’ve seen so far is that investigators recently posted DNA markers of the killer to a genealogy website asking if they could get help in identifying any of the killer’s ancestors, and then followed the ancestor’s family tree back down to the present, looking for male descendants who fit the profile.