Bulgarian national Aleksi Kolarov, 30, has been extradited from Paraguay to face charges that he participated in the operation of the Shadowcrew carding forum, which was dismantled by the U.S. Justice Department and the Secret Service in 2004.

When Kolarov was arrested by Paraguayan law enforcement authorities on June 14, 2011, he was found in possession in hundreds of thousands of dollars in various currencies, counterfeit payment cards, and equipment for re-encoding cards.

"Aleksi Kolorov is charged with conspiring in the most notorious online cybercrime marketplace of its time, selling the means to steal money and identities to other criminals," U.S. Attorney Paul J. Fishman said in a statement. "This extradition shows that hiding behind computers and borders does not deter us. It is vital that law enforcement work internationally to bring cybercriminals to justice, no matter how long it takes."

Kolarov has been charged with one count of conspiracy, one count of transferring false identification documents, and one count of offering access devices without authorization.

If convicted, he faces up to 30 years in prison and a fine of up to $750,000, or twice the gross amount of pecuniary gain or loss resulting from the offense.