A dispute between two men known to one another ended in a fatal shooting in Southeast Washington, D.C. On March 29, 2020, gunfire was reported in the 700 block of Alabama Avenue SE. Officers arriving at about 1:22 a.m. found 29-year-old Gregory Mayo of Southwest, D.C., unconscious in a vehicle with a gunshot wound. D.C. Fire and EMS pronounced Mayo dead at the scene; his body was taken to the Office of the Chief Medical Examiner.

Detectives from the Homicide Branch determined the shooting stemmed from a dispute. An arrest was made the same day: 24-year-old Gary Massey of Southeast, D.C., was charged with First Degree Murder while Armed in connection with Mayo’s death.

If anyone witnessed the shooting or has information about events around Alabama Avenue SE that night, please share what is known.