Minn. R. Crim. P. 17.01
Subd. 1. Offenses Punishable by Life Imprisonment. An offense punishable by life imprisonment must be prosecuted by indictment. The prosecutor may initially proceed by a complaint after an arrest without a warrant or as the basis to issue an arrest warrant. Subsequent procedure must be in accordance with Rules 8 and 19. Any other offense defined by state law may be prosecuted by indictment or by a complaint as provided by Rule 2.
Subd. 2. Misdemeanor and Gross Misdemeanor Offenses. Misdemeanors and designated gross misdemeanors as defined by Rule 1.04(a)-(b) may be prosecuted by tab charge. A complaint must be subsequently served and filed for designated gross misdemeanors as required by Rule 4.02, subd. 5(3).
Subd. 3. Indictment Following Arrest or Complaint. The arrest of a person by arrest warrant issued in a complaint under Rule 3 or the filing of a complaint under Rule 4.02, subd. 5(2) against a person arrested without a warrant will not preclude an indictment for the offense charged or for an offense arising out of the same conduct.
Minn. R. Crim. P. 17.01