It's fairly serious and I have evidence to prove it... but the only problem is this person is in another country.
How do I turn them in or report them if they're in another country?
Most Helpful Guy
What kind of crime? That makes a big difference.
If where the crime was committed, and the location of the person are two different countries, I'd forget about it unless it's REALLY REALLY serious.
You said the guy is in the US. If the guy is in one state, and the crime was in another state, I'd forget about it unless it's a pretty serious crime. They won't extradite from one state to another unless it's serious. (yes that requires an extradition)
Most crimes in the US are state law. Very few criminal laws are federal. Ideally you should contact the state authorities in the state where the crime was committed. If s/he is in a different state, I think reporting it there would be worthless because they can't do a thing about it. You want the place where the crime was committed, not where he is.
A few crimes are federal and can be reported to the FBI. I'm sure there is way at their web site that's not too difficult to figure out. You could even report other crimes there as well. Even if it's not their jurisdiction, they could still report it to the proper authorities.
Otherwise, look up the state online, and it shouldn't be too hard to find the right place to report it. If you want to say which state it is, probably somebody here could find the right place faster than you could. It's always more difficult to find your way around government sites in other countries where they have different names for everything.1
Most Helpful Girl
I was hoping I'd get to answer this anonymously (and provide details that I wouldn't otherwise say), but oh well... First, how you report it depends on these things:
1) Where you live.
2) Where he/she lives.
3) What the crime is.
4) What the laws in those countries are.
5) Oh, and it also depends on how much you know about that person. (Do you know their full name, at least, and have you verified it with internet searches?)
Since you won't share what the crime is, I can't help you as much as I'd to. I can only assume the situation based on my experiences. So, let me quickly say that I was once involved in a crime. When I was 13, I had a run-in (online) with a pedophile. I was very close to actually meeting him, but I panicked and emailed the FBI. I don't know what the crime is between you two, but I suggest contacting the FBI (they have websites online with phone numbers and emails), a local police department, or even turning to a friend/relative and asking for advice from them.
In the meantime, I recommend that you gather as much evidence as possible. Photographs, screenshots of conversations, a full description of him, and everything you know about him. Also, of course you would have to share details with whoever you contact about it. The more information you can provide, the better the outcome will be for you.
Good luck. PM me if you have any questions about my experience.2