Well...normally I'd be in the innocent till proven guilty crowd. If you can do it for lifelong scumbag criminals and OJ then you can do it for retired cops. But when a marriage is breaking up, and the girl is going for the $$, there are some guys who just cant live with that. Some guys love their money, and their things, more then anything else in the world.
I look at this guy, the way he dresses, the stuff he owns, his need for notoriety and the spotlight, and I see that kinda guy. And those dicks investigating him see it also, believe me. And they love it. The investigating Police wish he's appear on every show on television wagging his mouth.
If it was me, and it never could be cause I fear Gods justice, but if it was I would have kept my mouth shut and let the story die off of page #1. Peterson's constant babbling has made it a big story for to long and has made him a lot of enemies. They are going to investigate this guy forever if thats what it takes.
What your seeing now is simply a tactic. They know they dont have a chance to convict him on this murder but they are turning up the heat on him, ramping up the pressure, in the hopes of getting him for the last wife. Right now they are screwing him back, and the "G" has limitless resources. They can spend unlimited $$, and keep 50 guys on it as long as they like.