A gun-wielding man wearing a bandana over his face robbed a Silver Spring Shell gas station early Saturday morning, police said.

Around 6 a.m., a man armed with a shotgun entered the gas station store at 4001 Aspen Hill Road and demanded cash, Montgomery County police said. 

The man fled on foot with an undisclosed amount of cash, police said. A store employee was unable to describe the man's face, which was covered by a bandana, police said.

The employee described the suspect as 5'8'' and 150 pounds, according to police.