Northumbria Police are investigating a robbery which took place at the Spar in Ewesley Road, Sunderland.
Money was stolen during the robbery which occurred at 8.08pm on Monday, February 29. No-one was injured in the incident.
Officers are in the area carrying out enquiries and offering reassurance to the local community.
Neighbourhood Inspector for the area, Lisa Laverick, said: "We quickly deployed officers to the area last night to offer reassurance to the local community, and officers will continue to be in the area today."
Anyone with information should ring Northumbria Police on 101 quoting reference 1067 290216 or Crimestoppers anonymously on 0800 555 111.