Idaho Code § 19-2121

If the defendant is not arrested on a warrant from the proper county, as provided in the last section, he must be discharged from custody, or his bail in the action exonerated, or money deposited instead of bail must be refunded, as the case may be, and the sureties in the undertaking, as mentioned in that section, must be discharged. If he is arrested, the same proceedings must be had thereon as upon the arrest of a defendant in another county on a warrant of arrest issued by a magistrate.