Going through the U.S. Postal Service might get you better results than the Bureau....this is, after all, mail fraud (a Federal crime) and possibly wire fraud as well. Also, Paypal will get involved, if that's how the money was transfered and, finally, get word to this little bastard's local cops....if anybody's got an address on him.
Failing any of that, I'd like to send him Bikers: the gift that keeps on f**kin' giving...