Officials with Hagerstown Police say the incident happened Sunday afternoon around 3:30 on the 900 block of West Washington Street.
Police say the juveniles, whose names are not being released, were unsuccessful in their attempt and ran before police arrived on scene.
All four were located a short distance from the scene not too long after the incident occurred, and were taken into custody.
A firearm was recovered in the investigation. All four individuals have been charged with armed robbery.
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