 Police say 16-year-old Juan Roach was shot and killed during a robbery. The suspects are 21-year-old Walter Plummer of Suitland and 21-year-old Akia Bagley of D.C. Plummer is charged with first- and second-degree murder and related charges, while Bagley is charged with assault, accessory after the fact, and additional charges. Police say Plummer and Bagley are in custody. No bond.