State police troopers arrested one clerk during an undercover sting operation Thursday to test whether store employees would sell alcohol to a minor in Southold Town, authorities said.
But 12 other stores passed the test, state police said.
Mohammad Ayub, 51, of Flanders was the one person nabbed in the sting, police said.
Mr. Ayub, a clerk at Valero Food Mart on Main Road in Cutchogue, was charged with unlawful dealing with a child, a misdemeanor, and a state alcohol sales violation, police said.
No other details were available.