N.H. Rev. Stat. Ann. § 287-J:2

The commission, with the assistance of the attorney general and the chief of police of any city or town where licensed facilities are located, shall administer and enforce the provisions of this chapter. To enforce the requirements of this chapter, the commission may exercise all rights of enforcement, including but not limited to its subpoena power, investigation authority, and authority to issue administrative orders and fines, granted to the commission by RSA 287-D.