Minn. Stat. § 629.343

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.