Officers were called to the 6400 block of Old Branch Avenue in Temple Hills around 2:20 a.m. for a report of gunshots outside the Hangar Club.
When they arrived, they found a male suffering from a gunshot wound. He was transported to a nearby hospital where he later died.
Investigators later identified the victim as Christopher Earl Wilson, 26, of Capitol Heights.
Police say a second person, an adult man, was also shot during the incident. Police say that the victim, who was not identified, suffered non-life-threatening injuries.
Detectives say they are working to establish suspects and a motive in this case. Anyone with information is asked to contact police at 1-866-411-TIPS.
A reward of up to $25,000 is being offered for information leading to an arrest and indictment in the case.