Police officers responded to 18th Street Southeast, where the street meets Morris Road Southeast, after a report of a shooting in the area. They received the call just after 11:20 a.m.
At the scene, the victim was found in critical condition. Police said the juvenile was not breathing normally and was in and out of consciousness.
The victim was treated for injuries but has since died, sparking a homicide investigation.
Officers also found themselves running after suspects. The chase ended with police taking a person of interest into custody.
The boy has been identified as 16-year-old Jakhi Snider, of Southeast, D.C.
Police have not released a motive for the shooting. The investigation is active and ongoing.
This is a developing story. WUSA9 is working to confirm additional details. Stay with WUSA9 for the latest updates as they come in to our newsroom.