N.H. Rev. Stat. § 21-P:7-d

I. The commissioner may appoint department of safety security officers for the purpose of keeping the peace at department facilities and grounds and protecting department employees. The security officers shall be under the immediate control of, and be responsible to the commissioner or the commissioner's designee. Security officers shall have the authority of an ex officio constable and possess such limited police powers and authority as are granted to them by the commissioner pursuant to RSA 21-P:4, XVII. The security officers shall be entitled to the same statutory indemnification regarding their official acts as other state officials and employees. II. Whenever a security officer detains an individual, the security officer shall surrender the person to a state trooper, deputy sheriff, or local police officer having jurisdiction in the geographical area where the detention occurred. III. Security officer staff shall be considered a law enforcement agency for purposes of receiving and exchanging criminal justice information and motor vehicle record information with the division of state police, the division of motor vehicles, the division of homeland security and emergency management, and other law enforcement agencies and officials. IV. Security officers shall not be required to meet all of the physical, training and educational 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. Security officers who were certified police officers prior to appointment to the security staff may retain or regain their police certification while serving as sworn department of safety security officers upon completing such remedial or updated continuing education and other requirements as the police standards and training council may require.