Idaho Code § 19-4512
The officer or person executing the governor's warrant of arrest, or the agent of the demanding state to whom the prisoner may have been delivered, may when necessary, confine the prisoner in the jail of any county or city through which he may pass, and the keeper of such jail must receive and safely keep the prisoner until the officer or person having charge of him is ready to proceed on his route, such officer or person being chargeable with the expense of keeping; provided however, that such officer or agent shall produce and show to the keeper of such jail, satisfactory written evidence of the fact that he is actually transporting such prisoner to the demanding state after a requisition by the executive authority of such demanding state. Such prisoner shall not be entitled to demand a new requisition while in this state.
Idaho Code § 19-4512