D.C. police are investigating three robberies — two of them involving handguns and possibly linked — that took place on the streets in upscale areas of Northwest Washington.

At about 7:15 p.m. Monday, a man was walking in the 3800 block of Warren Street near Tenley Circle when he was approached by at least three robbers described as black men, 5 feet 7 inches to 6-feet-tall in their early 20s. The robbers took a computer and wallet from the victim, and Second Police District Commander Mike Reese said at least two of the robbers hit the man before they fled on foot.