Byron Ladell Williams was arrested last March after police found him in the back of a parked car in which a "ready-to-fire" semi-automatic pistol.

New Orleans man already convicted twice for cocaine possession now faces a possible 10-year federal prison sentence for being a convicted felon in possession of a firearm.U.S. Attorney Jim Letten's office says 24-year-old Byron Ladell Williams was arrested last March after police found him in the back of a parked car in which a "ready-to-fire" semi-automatic pistol, loaded with 26 rounds, was on the floorboard. New Orleans police made the arrest and later turned it over for investigation by federal authorities working under the "Project Safe Neighborhood" program.Sentencing is set for May 19.