The victims were identified as Davonte Simms, 27, of Alexandria, and Kion Scott, 26, of Oxon Hill.
The other homicide happened around 1:10 a.m. Friday in the 6700 block of Danford Drive near Keystone Avenue in Clinton. Officers were called for a report of a shooting and found a man with “trauma to the upper body,” according to a Twitter message from local police.
The man, 21-year-old Deandre Clark of Clinton, was pronounced dead at the scene.
Authorities said they are working to determine motives and find a suspect or suspects in each of the killings.