Minn. Stat. § 629.343: PROBABLE CAUSE ARRESTS; OFFENSES ON SCHOOL PROPERTY.

Notwithstanding section 629.34, a peace officer, as defined in section 626.84, subdivision 1, paragraph (c), who is on or off duty within the jurisdiction of the appointing authority or on duty outside the jurisdiction of the appointing authority pursuant to section 629.40, may arrest a person without a warrant if the peace officer has probable cause to believe that the person within the preceding four hours has committed a fifth-degree assault, as defined in section 609.224, on school property, as defined in section 609.66, subdivision 1d. The arrest may be made even though the crimes were not committed in the presence of the peace officer.