(a) IN GENERAL. A person must be taken without unnecessary delay before a magistrate judge in the district of arrest if the person has been arrested under a warrant issued in another district for: (i) failing to appear as required by the terms of that person's release under 18 U.S.C. §§ 3141-3156 or by a subpoena; or (ii) violating conditions of release set in another district. (b) PROCEEDINGS. The judge must proceed under Rule 5(c)(3) as applicable. (c) RELEASE OR DETENTION ORDER. The judge may