The suspect demanded medication.
Hagerstown police were searching for a man who demanded medication from the Weis pharmacy at 12817 Shank Farm Way.
Sgt. David Long said the man entered the supermarket at about 1 p.m. Monday and told the pharmacists to give him drugs.
Long said the man left the store when the pharmacists refused, and was believed to flee the parking lot in a white van.
Police were searching for the man in an apartment complex behind the supermarket.