The other big issue is that they don't feel any ordinary obligation to report it to the police but only do so if required by state law - even then I'm not sure they do - don't these men have any conscience?
They do - If required by state law
1st-They confront the accused and see if he will turn himself in, if no.
2nd-They see if anyone else who knows will go forward, if no.
3rd-Two elders make an anonymous phone call from a neutral location they write down who called, who they spoke to time etc and sign it put in the congregation file. So if the issue is raised they can say they complied with the law.
This has nothing to do with bringing a criminal to justice but simple to cover there ass.