well they could start an investigation though if the comment was made in a less joking more serious matter and that something actually did occur
murder has no statute of limitations
but self defense from a violent attack is allowed as well
perhaps he should have kept his flipping mouth shut instead of posting it out on facebook
He was 13 at the time. So worse case they prosecute him as a juvenile, and he gets locked up until he’s 21. Which was in 1981.