The first shooting occurred late Thursday in District Heights near Addison and Walker Mill roads.
Police said 20-year-old Nafee Curtis Smith was found in the road not far from his home after someone called 911 to report a shooting. Smith was transported to a nearby hospital, where he was pronounced dead.
Investigators think Smith was walking south on Addison Road when a suspect pulled out a gun and shot him, police said.
Officers were called to Addison Road South about 11:55 p.m. for a report of a shooting. Police say 20-year-old Nafee Curtis Smith was walking when he was approached by someone who pulled out a gun and shot him.