Subd. 1. Witnesses. A subpoena may be issued for attendance of a witness:
The subpoena must command attendance and testimony at the time and place specified.
Subd. 2. Documents.
Subd. 3. Unrepresented Defendant. A defendant not represented by an attorney may obtain a subpoena only by court order. The request and order may be written or oral. An oral order must be noted in the court’s record.
Subd. 4. Grand Jury Subpoena. A grand jury subpoena must be captioned “In the matter of the investigation by the grand jury of _________ .” (Insert here the name of the county or counties conducting the investigation.)
Subd. 5. Motion to Quash. The court on motion promptly made may quash or modify a subpoena if compliance would be unreasonable.
Minn. R. Crim. P. 22.01