My personal guess - and that's all it is - is that no one "came forward" in this case. My belief is that LE had some suspicions, but not hard evidence, and that there were whispers in the community. I don't think they even had enough to get a warrant to search the Adams property. I believe the "break" in the HB case came when ZA made the threats against the girl that landed him in jail. My thinking is that something in that event gave them the ability to get a search warrant to get on his property and look around, from which one thing led to another.