At 00:29 in this video it says it was information in an interview with someone who led them to TB's body and that police have not revealed who told them where to find TB's body. That is pretty good information, I hope they have or will have enough to make an arrest real soon.
http://kstp.com/news/stories/s3571673.shtml
Thanks for posting that!!! I've never seen that information before in any articles. Excellent information!