Michigan Compiled Laws, Chapter 600. Revised Judicature Act of 1961 § 600.8313

Sec. 8313.(1) A violation of state criminal law shall be prosecuted in the district court by the prosecuting attorney. A violation of an ordinance of a political subdivision that is a misdemeanor or that is not designated as a civil infraction shall be prosecuted in the district court by the attorney for the political subdivision whose ordinance was violated. If the violation is a civil infraction, the prosecuting attorney or attorney for the political subdivision shall appear in court only in those civil infraction actions that are contested before a judge of the district court in a formal hearing as provided in any of the following, as applicable:

(2) This section does not apply to an ordinance violation designated a blight violation by a political subdivision that establishes an administrative hearings bureau pursuant to statute to adjudicate and impose sanctions for blight violations.