I believe BM heard about the bike being found and where from GD. GD told Lauren S. that he (GD) heard it on the scanner and that he was the 3rd person on scene because he lives so close by.
After at least 2 unanswered calls from LE, they had dispatch call BM and he had apparently worked up enough crocodile tears to answer. IIRC LE told dispatch to ask BM to confirm what color the bike is. So I guess BM will say he learned the location that way. JMO
https://twitter.com/ashleykktv/status/1429862650373083141?s=21
Defense says #BarryMorphew got to the scene of where #SuzanneMorphew bike found and was very emotional. Undersheriff says he disagrees. Defense says dispatch called him and when they called Barry he was very emotional. Undersheriff agrees. @KKTV11News