ATLANTA - An alleged teenage gang member is facing multiple charges after Atlanta police say he was caught with stolen and altered firearm. Atlanta police say the arrest started at around 8:30 p.m Monday when officers responded to reports of a dispute with a weapon at a convenience store on Atlanta Avenue. When the officer got to the scene, police say the suspect, identified as 17-year-old Tayvon Shelton, deliberately shoved the law enforcement agent - leading to the officer detaining the teen. During a search of the Shelton, police say the officer found a magazine with 16 9mm rounds, a black face mask, a glass puncher, and a firearm that had been altered to be changed from a semi-automatic to a fully-automatic weapon. In their investigation, officials say they found that the firearm had been stolen out of Sandy Springs. Officials say Shelton is a confirmed gang member and already had a warrant out for his arrest in DeKalb County for failure to appear on a robbery charge. Shelton is now in custody charged with possession of tools for the commission of a crime, simple assault, obstruction, theft by receiving, unlawful possession of automatic weapons, and possession of a firearm by a person under the age of 18.