Federal and state authorities announced the indictment Tuesday.
Among those indicted was OU and NFL star De'Mond Parker, aka "Running Back," who is listed in the indictment as Demonn Parker. Also indicted was gang leader Donald Walters, who Williams said had 40 people working for him. Of the 51 people indicted, 23 had been arrested by Tuesday afternoon, authorities said.
Parker, an OU standout who later played for the Green Bay Packers, was arrested last year on complaints of trafficking crack base and marijuana.
According to an arrest report, Parker was found with marijuana during a search. Police also discovered a machete and 28 grams of crack cocaine inside the vehicle. He was released on bail and no charges were filed until Tuesday's indictment.
The indictment states that on multiple days in July 2013, Parker sold crack cocaine through the window of a house in the 500 block of East Tecumseh Street. (Full coverage at Tulsa World) While at OU, De'Mond Parker rushed for 3,403 yards on 579 carries and 21 touchdowns.