Haw. Rev. Stat. § 832-5
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 any state, the governor of this State may agree with the executive authority of the state for the extradition of the person before the conclusion of the proceedings or the person's term of sentence in the state, upon condition that the person be returned to the state at the expense of this State or any county thereof as soon as the prosecution in this State is terminated.
The governor of this State may also surrender on demand of the executive authority of any state any person in this State who is charged in the manner provided in section 832-3 with having violated the laws of the state whose executive authority is making the demand, even though the person left the demanding state involuntarily.
HRS § 832-5
Re "due process" requirements for out-of-state transfers of prisoners. 387 F. Supp. 912, 396 F. Supp. 196.