If a prisoner, at the time the prisoner's permit is revoked, is confined in any penal institution on any criminal process or under sentence for any offense committed while the prisoner was at liberty upon parole, the order of the parole board for the prisoner's return to the adult correctional institutions or the women's division of the adult correctional institutions, to serve the remainder of the prisoner's original sentence, shall be served upon the release of the prisoner from the penal institution in which the prisoner is confined, and it shall be discretionary with the board as to whether or not the remainder of the prisoner's original sentence runs concurrently with or consecutively to any other sentence.
R.I. Gen. Laws § 13-8-20