Mich. Comp. Laws § 339.5505

Sec. 505. The department shall conduct the investigation required under section 503. In furtherance of that investigation, the department may request that the attorney general petition a circuit court of this state to issue a subpoena that requires a person to appear before the department and be examined with reference to a matter within the scope of the investigation and to produce books, papers, or documents pertaining to the investigation.