The NBA plans to investigate the arrest of All-Star forward Charles Barkley of the Philadelphia 76ers for carrying a loaded gun in a car he was driving.

Barkley, 25, was arrested at 10:43 a.m. Wednesday after a state police trooper stopped him for speeding in the westbound lanes of the Atlantic City Expressway and discovered a 9mm automatic handgun loaded with 13 rounds next to the seat.