The following persons are magistrates:
First. Justices of the Supreme Court.
Second. Judges of the Court of Criminal Appeals.
Third. Judges of the Court of Appeals.
Fourth. Judges of the district court, including associate district judges and special judges.
R.L.1910, § 5628; Laws 1968, c. 162, § 7; Laws 1970, c. 247, § 16, emerg. eff. April 15, 1970.