Firearm Found on Street in DorchesterThis morning at 06:15, a witness entered District 11 and turned in a firearm he found at Hallet Street and Gallivan Boulevard. The witness stated while getting his morning coffee, he observed the gun in the middle of the street. The firearm was found to be loaded with an obliterated serial number. One Arrested after Motor Vehicle Stop Members of the Youth Violence Strike Force conducted a motor vehicle stop last night at 21:55 at 14 Wayland Street in Roxbury. Officers discovered the 19-year-old driver was not licensed to operate a vehicle in Massachusetts. He will be summons into the Roxbury District Court for that violation. A passenger of the vehicle was arrested after being found to be in possession of a loaded firearm. Police arrested 17-year-old Antonio Llamas, of Malden. He will be arraigned in the Roxbury District court on Tuesday morning. Laundry Robbed at Gunpoint An unknown white male entered “Harry’s Laundry” located at 1866 Dorchester Avenue yesterday afternoon at about 16:46. The suspect, armed with a firearm, robed the victim of an undisclosed amount of U.S. Currency before fleeing on foot toward the Ashmont M.B.T.A. station. Teen Arrested in Downtown Crossing Officers from District 1 were approached by an employee of the Champs Sports Store yesterday at about 13:30 to report an incident that had just occurred at 425 Washington Street. The witness states that three males were purchasing items on a credit card. A 16-year-old male from Roxbury signed the credit card receipt and when the witness asked for identification, all three males fled the store. The suspects were later found in another store and the 16-year-old was arrested for Forgery of Records.