He seems to be active on the site and popping his head around, posting in mining-related threads.
Can't anyone who was affected contact his local authorities?
There was a person that was going to e-mail his employer about his scam. Also he could have been running some miners at his job so this would also be a problem for him.
If we have his picture then I am sure it's pretty much easy to track him down and beat the shit out of him right?
I think a better tactic is to confront his family, friends, and colleagues with what he has done. Thru peer pressure he might do the right thing and return BTC. If not then criminal charges need to be need to be filed against him. Since this scam has occurred online it would probably fall under the jurisdiction of the FBI and not SDPD. They are very meticulous in prosecuting crimes on the internet.