In my experience, the question has never been asked within the Society, at least I have never seen it commented on. Supposing a man confessed to a murder that had happened some years ago ? I don’t know, I guess these days they would ask the Branch Office what to do.
I do recall the exchange of words at the Australian investigation into child abuse. The presiding judge asked the elder “ So what if a member confessed to murder , would you keep that quiet?”
The elder said “No” .