R.I. Gen. Laws § 20-1-19: Powers of enforcement of officers in waters between states.

If and when the states of New York and Connecticut and the commonwealth of Massachusetts, or any of them, shall enact similar laws for the arrest and punishment for violations of the conservation or fish laws of this state or the state so enacting the similar law, committed, or attempted to be committed, by any person, or persons, fishing in waters lying between the states, any wildlife protector, fish warden, or other person of either state who is authorized to make arrests for violations of the conservation or fish laws of that state shall have power and authority to make arrest on any part of the waters between the states, or the shores thereof, and to take any person, or persons, so arrested for trial to the state in which the violation was committed and there to prosecute the person, or persons, according to the laws of that state.