RSA 30-B:26: Powers and Duties.

All transport and custody officers shall be ex officio constables and shall possess limited powers of arrest which shall only extend to the confines of the grounds of the county correctional facility and to the period during which such officers are on official active duty. The 2 instances where the authority of the transport and custody officers shall extend beyond the county correctional facility grounds, and during which time the transport and custody officers may utilize blue lights on vehicles pursuant to RSA 266:78-b, are:

I. Where a county transport and custody officer is in hot pursuit of a person who has committed a crime or violation by interfering with the maintenance of custody and control; or

II. Where a county transport and custody officer is transporting or assisting in the transport of a committed inmate, including, but not limited to, medical transports and transports involving a committed inmate who is receiving services in a health care setting.