Gary Stephen Kaplan, the founder of BetOnSports PLC, was arrested on Wednesday in the Dominican Republic. He was sent from there to Puerto Rico to appear before a magistrate, and will soon be sent to St. Louis.

Kaplan has been wanted by the U.S. on charges of fraud and a racketeering conspiracy. He was charged in St. Louis federal court last year for allegedly running a criminal enterprise that illegally took $3.5 billion in bets since 2001. Kaplan, 10 people, and 4 corporations were indicted, and co-owner of BetOnSports Norman Steinberg is still on the run. After one executive was arrested in July, the company announced it was stopping U.S. operations, which accounted for about 90% of its business.

In October, the U.S. Congress passed a law which banned almost all forms of online gambling.