A 71-year-old Dundee man was injured in a 3-vehicle pileup in Mankato Thursday afternoon. The accident happed at about 2pm on southbound Highway 169 at Riverfront Drive. The State Patrol says that a minivan and a van were stopped in the construction zone when a semi-truck was unable to stop and rear-ended the van, sending it into the first vehicle. The driver of the van, 71-year-old William Lange of Dundee, was treated for minor injuries at the Mankato Mayo Hospital and later released. The driver of the semi, 35-year-old Terry McMichael of North Mankato, and the other driver were not hurt.