It was answered by Gitana. He is required not to disclose BL’s location if he knows it due to attorney client privilege, and if asked directly he can refuse to comment. Please see this post in answer to my scenario questionThis has been asked and answered on a previous thread. He doesn't need to report it, but if asked by LE, he cannot lie. Or if he does lie, SB is breaking the law.
Found Deceased - WY - Gabrielle ‘Gabby’ Petito, 22, Grand Teton National Park, 25 Aug 2021 #64