RSA 48-A:9: No Abrogation of Other Powers of Municipalities.

Nothing herein shall be construed to abrogate or impair the powers of the courts or of any governing body, city council, or department of any municipality to enforce any provisions of its charter or its ordinances or regulations nor to prevent or punish violations thereof; and the powers conferred by this chapter shall be in addition and supplemental to the powers conferred by any other law.