Three of the biggest online poker companies in the world are being charged with fraud and illegal gambling, according to the Associated Press.

The three companies, Full Tilt Poker, PokerStars and Absolute Poker, face charges that allege the companies defrauded the United States government by tricking banks into processing payments that in turn became revenue.

The indictment alleges that the entities took the payments from gamblers and embezzled them through nonexistent companies.

Attorney Preet Bharara claimed that the gambling sites "concocted an elaborate criminal fraud scheme, alternately tricking some U.S. banks and effectively bribing others to assure the continued flow of billions in illegal gambling profits."

Arrests have been made in connection to the case.