It happened at a garage on the 11800 block of Grand Park Avenue around 10:45 p.m. Thursday, April 4, Montgomery County police told Daily Voice.
A man and woman were walking to their car when they were approached by four suspects in a vehicle.
Three armed suspects got out, demanded the victims’ property, got back inside, and fled, police said.
The investigation is ongoing.
Click here to follow Daily Voice Gaithersburg and receive free news updates.