I would say I they are correct in suspecting this guy. Hopefully this man is not being wrongfully accussed. If he is the guy, lets track this bastard down.
I think they checked him because he was a known perp--he had a history of violence against women and being a sexual predator.
I think they cought him while checking his DNA against the evidence in another murder in Zachary. When they ran his DNA throught the computer, Carrie Yoder's (sp?) file came up. BINGO!
I thought that they had actually gone out and gotten a sample from him a couple of months ago. That would comport with Bestbank's version, and then, too, to what happened at the end per Jack.