N.H. Rev. Stat. § 14:50

I. The sworn members of the legislative security staff while on official duty shall have the authority of an ex officio constable including the power to detain persons who are creating a disturbance or who they have reasonable grounds to believe have committed any offense under the laws of the state, for as long as necessary to surrender the person to a state trooper, deputy sheriff, or local police officer having jurisdiction, provided such detention is accomplished in a reasonable manner. II. When in the performance of their duties legislative security staff members shall be entitled to the same indemnification of state officers and officials as provided in RSA 99-D:2. III. The legislative security staff shall be considered a law enforcement agency for purposes of receiving and exchanging criminal justice information and motor vehicle registration information with the department of safety and other law enforcement agencies. IV. Legislative security staff members shall not be required to meet the training and certification requirements of RSA 106-L:6 but may attend and participate in training programs at the police standards and training council and upon successfully completing such programs shall receive the same academic credits or certifications as other peace officers attending such programs. V. Legislative security staff members who were certified police officers prior to appointment to the legislative security staff may retain or regain their police certification while serving as sworn members of the legislative security staff upon completing such continuing education requirements as the police standards and training council may require.