Me. Rev. Stat. tit. 30-A, § 3871

The licensing board shall prosecute for any violation of sections 3811 to 3813 and 3831 to 3834 that comes to its knowledge, by complaint, indictment or civil action. All penalties recovered shall be paid to the municipality where the offense is committed. Any citizen of the State may prosecute for any violation of sections 3811 to 3813 and 3831 to 3834 in the same manner as the licensing board may prosecute.