I think he was in a mental hospital or some kind of institution at the time tbh, he has pretty much been ruled out.So just pure speculation of the obvious suspects. I was thinking along the lines of some significant evidence that pointed in one particular direction.
It was linked to Christopher Halliwell at one point I know as it represented his MO and there were other factors such as location/date of event to support it. It doesn't seem to have been given any support whatsoever from the police though which makes you think that they have evidence that rules him out.
Just reading about updates yesterday.The Jon Benet Ramsay case is another odd one, did the son have anything to do with it and are the parents protecting him.