Numerous news sources are reporting that Hector M. Hernandez, a 20-year old residing in Takoma Park, was arrested Friday for the fatal shooting of a 14-year old boy on a Ride On bus last Saturday. Hernandez is allegedly connected with the MS-13 gang which has a strong presence in the Washington, D.C. area; the Post notes that this is the suburbs’ first arrest of an MS-13 affiliate in a homicide in more than a year and comes on the heels of a three-year program designed to curb gang violence in Montgomery County. According to witnesses, Tai Lam — a freshman honor roll student at Montgomery Blair High School — was struck when Hernandez and his friends exited the bus, held the back door open, and fired several shots into the interior. Two other teens were injured in the attack. Authorities will be holding a meeting at 7 p.m. tomorrow at the Blair High auditorium to brief the public.