Detroit Piston Ben Wallace is facing a 5-year felony charge of carrying a concealed weapon after police found an unloaded pistol in a backpack in his car as they arrested him on suspicion of drunken driving Saturday in Bloomfield Township.

When officers searched his car, they discovered an unloaded pistol in a backpack in the "passenger compartment" of the vehicle, according to a press release issued by the police department today.

Wallace, 37, is expected to appear Oct. 3 for a pre-examination conference in 48th District Court in Bloomfield Township, according to police. He has been arraigned on a 93-day misdemeanor charge of drunken driving and a 5-year-felony charge of carrying a concealed weapon, police said, without specifying what day he appeared in court.