I had a situation like this happen once. I was president of a condo
association and we had a punk in his 20's show up and move in with his
mother and step-dad. He was a real trouble maker, no job, went around
intimidating residents, standing outside their units just staring at
them, asking them for money, etc. I'd heard complaints from a half
dozen people. He'd had confrontations at the pool. So, one day he
goes to the pool and the lifeguard asks to see his pool badge, as she
does with everyone. He gets in her face and curses her out in front of
everyone. She calls the cops, I get informed of it and go over. So, I
tell him to go home, he's not using the pool today. Couple days later,
I have FU carved in the hood of my car.
So, I called the cops, they came out, took the report. They already
knew the punk, he had a long arrest record. But like in this case,
they said there was nothing more they could do. I asked about trying
for fingerprints, was told wasn;t worth the effort. So, I made a call
to the condo association attorney and asked him to call the township
business administrator. That same day, I had a cop dusting for prints.
And he confirmed what a career criminal this skunk was and that he was
dangerous. For the next week, I'd look out and see a cruiser parked
on the street in front of my home, randomly for a couple hours at a
time, where it had an excellent view of where the punk was living too.
Asked them what they were doing and they said they were there to put
some heat on the guy, let him know they're watching. I also notified
the parents that they were up for violations of the condo rules and
regulations by their son and would have to appear at the next hearing.
And I hired an off duty cop to attend as well, since I didn;t know if
the punk was coming and what trouble he might cause.
Within two weeks, the parents got rid of him, moved him out and shipped
him away. Which solved my problem. I think the OP's case is
different, because he has no idea who did it and isn't likely to have
to have further confrontations or have to deal with the perpetrator.
However, if you're not satisfied with what the cops are doing, it's
your right to complain to the municipality that employees them, ie the
business administrator, mayor, council, etc.