When it is desired to have returned to this state a person charged in this state with a crime and the person is imprisoned or is held under criminal proceedings then pending against the person in another state, the governor of this state may agree with the executive authority of the other state for the extradition of the person before the conclusion of the proceedings or the person's term of sentence in the other state, upon condition that the person be returned to the other state at the expense of this state as soon as the prosecution in this state is terminated.
§ 46-30-403, MCA