WINSLOW, Maine — Maine police are using a grant to perform compliance checks on businesses to help curb underage drinking.

On Tuesday, an undercover officer and a 20-year-old volunteer went to every business in Winslow that serves alcohol to see if they would ask the volunteer for identification. The Morning Sentinel reports ( ) most businesses asked for identification, though three businesses failed the check.

Winslow Police Chief Shawn O’Leary says the checks were more of a courtesy, and the businesses weren’t cited after an in-uniform officer explained the situation. Officials say the businesses will be cited if they fail again, however.

The department received a $2,000 grant from Healthy Northern Kennebec to help fund overtime for officers performing compliance checks.

O’Leary says compliance checks are the best way to curb underage drinking.

Information from: Morning Sentinel,