At about 6:45 PM on Wednesday September 6, 2016, officers assigned to the Youth Violence Strike Force conducted a traffic stop in the area of 401 Bowdoin Street in Dorchester which resulted in the arrest of all three occupants of the vehicle. The officers had stopped a car for a traffic infraction when they learned that the operator, Joemi Villalona, 19, of Dorchester, did not have an active driver’s license. When the officers removed the suspect to place him in custody, they observed a folding knife and three rounds of ammunition on the floor of the vehicle , leading the officers to believe there could be additional weapons inside. At this time, the officers performed a pat frisk of the vehicle and the passengers which resulted in the recovery of a loaded .40 caliber Smith & Wesson Model SD40VE handgun in the rear passenger area where Gustavo Fernandes, 22, of Peabody, had been seated. The officers later learned that Fernandes, who had originally provided a false name during the investigation, was wanted on two outstanding warrants for Distribution of Class A Drugs. Officers also recovered a second folding knife from the front seat passenger, Akeem Mattis, 22, of Dorchester, in addition to eleven bags of heroin packaged for sale from his pockets. All three suspects were placed in custody without incident and will appear in Dorchester District Court on a variety of charges. Gustavo Fernandes will be charged with Unlawful Possession of a Firearm, Unlawful Possession of Ammunition, Carrying a Loaded Firearm and Armed Career Criminal (Level 1). Akeem Mattis will be charged with Unlawful Possession of Ammunition and Possession with Intent to Distribute Class A Drugs. Joemi Villalona will be charged with Operating a Motor Vehicle without a License.