National Cyber Forensics Training Alliance

The FBI on Friday boasted that its two-year long undercover operation against users of the crime forum DarkMarket netted 56 arrests worldwide and prevented $70 million in economic losses, publicly acknowledging the sting for the first time.

...

DarkMarket members believed the site was operated from Eastern Europe, despite a 2006 warning from uber-hacker Max Ray Butler, known then as Iceman and Aphex. Butler cracked the site's server and announced that he'd caught Master Splynter logging in from the NCFTA's office on the banks of the Monongahela River. Butler ran a site of his own, and the warning was generally dismissed as inter-forum rivalry. " even when Butler was arrested in San Francisco last year on credit card fraud charges, and shipped to Pittsburgh for prosecution.

I didn't know the FBI in Pittsburgh did this kind of work... I guess neither did those 56 cyber criminals.

Previous story predicting the sting operation.