Police say the armed robbery involved multiple victims and multiple suspects, but did not specify where it took place.
Police believed at least one suspect was barricaded inside the 7 Seas Food and Liquor on the 1600 block of MacArthur Boulevard. Officials originally said the suspect was inside BonFare Market, but later updated the location.
The SWAT team still has the building surrounded. They've sent dogs in, just to make sure no one else is inside.
Police have also blocked off part of Ardley and Woodruff avenues.