Better to have them all in one convenient location - just kidding! Have you gone to the police with your information? I have found it helps to go in person.  I have a (probably) mentally ill stalker that I have succeeded in sending to jail once for assault and battery and twice more over five years for parole violation - he is a large and violent assaulter who swore to kill me (yes, I have a restraining order and a home firearm). Nevertheless, without a new crime conviction he is out on the street again in 30 days, and I suspect the PO's have pretty much decided not to pursue him. However, it DOES work to bug the PO on a regular basis.