Updated: 1:15 PM EST Mar 12, 2021 Baltimore police arrested a 15-year-old boy in connection with the shooting of a 12-year-old boy last week.City police said detectives arrested the teenager Thursday and that he had a loaded semiautomatic handgun.Police said they charged the teenager with first-degree attempted murder and handgun violations.The charges stem from a March 1 shooting of a 12-year-old boy in the 2000 block of St. Cloud Avenue in northeast Baltimore. The boy was shot in the arm and taken to a hospital, police said. BALTIMORE — City police said detectives arrested the teenager Thursday and that he had a loaded semiautomatic handgun.