This is just like the movie Goodfellas, except Tom Hayes (a.k.a. "Henry Hill") was not smart enough to, in a timely manner, seek out the prosecution and rattle everybody out in exchange for entering the Witness Protection Program or some form of clemency.

From what I have read in different cases involving a criminal group or simply a group of teenagers vandalizing a place, it does help to be the first one to talk to the police. Once the police / prosecution has enough information to make a case, they don't need anybody else.

(For those who have not seen the movie, it's a good movie to watch.)