R.I. Gen. Laws § 12-2.2-2
Upon issuance of a license under § 12-2.2-1, the person so designated as a capitol police officer shall have the same immunities and may exercise, in and upon the lands and buildings owned or leased by the state of Rhode Island and assigned to the Rhode Island public buildings authority, or to any municipal or private facility in which a state agency or a state court is convening a public meeting or public hearing, and upon streets and highways immediately adjacent to those lands, the same powers and authority of a police officer, as are conferred by the laws of this state upon members of the division of state police, including the power to arrest persons for violation of state criminal statutes or for violation of city or town ordinances of the city or town in which the state property is located.
R.I. Gen. Laws § 12-2.2-2