A manager of a convenience store in Cumberland has been issued a criminal summons for selling alcohol and tobacco to minors, including instances when he up-charged the minors, the Cumberland Police Department said Wednesday.

Kazi Nazrul Islam, 63, of Portland was issued the criminal summons for furnishing liquor to certain prohibited persons, a class-D misdemeanor, because he sold the alcohol “outside the scope of his employment.”

According to police, Islam, the manager at the Irving Express Mart on Main Street in Cumberland, charged a minor $60 for a six-pack of hard iced tea and a small bag of chips Aug. 4.

Police in Cumberland and Yarmouth had been investigating Islam for more than two months, and say they saw him selling tobacco or alcohol to minors in May, July and August.

Islam will also face administrative penalties for the alleged illegal sales, which could endanger his license to sell alcohol and tobacco.

“For quite some time, the Police Department has been receiving anonymous reports of illegal alcohol and tobacco sales at this business,” said Cumberland Police Chief Charles Rumsey, in a statement. “Our department undertook this operation in an effort to determine if there was, in fact, a pattern and practice of illegality which could serve to place our community’s youth at risk. I’m pleased that our investigation was successful at establishing that indeed, this store was a place where minors could expect to purchase these items. I’m hopeful that our actions will change the behavior of the store manager, and enhance the safety of our children.”