Allentown police are investigating an armed robbery at the Shell Food Mart in the 1300 block of North 19th Street.
Police say it happened Friday morning, when two black males -- one of whom was brandishing a gun -- ordered the clerk to open the cash register.
Police say the two males got away with an unknown amount of cash.
The suspects were last seen heading south on 19th Street in a black vehicle.
Police say no one was injured in the incident.
Anyone with information is asked to call Allentown police.