A male subject entered the Sweet Frog establishment on Costley Way in Prince Frederick on April 18 at 4:25 p.m. and handed the clerk a $50 bill to pay for some yogurt. 

The bill seemed suspicious to the clerk and a second clerk went to retrieve another currency pen to determine if the bill was fraudulent and at that time, the man left the store, leaving behind the bill and the yogurt. 

The bill was determined to be counterfeit.  Dep. N. Gilmore is investigating.