Haw. Rev. Stat. § 832-4: Governor may investigate case.

When a demand is made upon the governor by the executive authority of any state for the surrender of a person so charged with crime, the governor may call upon the attorney general or any other prosecuting officer in this State to investigate or assist in investigating the demand, and to report to the governor the situation and circumstances of the person so demanded, and whether the person ought to be surrendered.