Wow. I am sure the PSP is all over every incident involving the Amish; their children, etc. I wonder if the killer drives a pick up? Maybe it wasn't him, but maybe he was questioned, fit a general description, etc., and that was the 'something' that set off his rage against little girls and/or the Amish.
I just don't buy that this school was "convenient" for him. something else was up with this guy, IMO.