Police arrested a 26-year-old man at gunpoint Saturday afternoon after a passer-by reported the man had a gun inside a north Modesto convenience store. The incident occurred at the General Store in the 3600 block of Tully Road, north of Standiford Avenue. When officers arrived, the man was walking outside the store. Officers ordered him to put his hands up. Police said he was uncooperative and walked around a car before putting something into the vehicle. The officers took him into custody without further incident. Police found a loaded gun in the car. Police identified the man as Aiman Krayem.