The State Patrol says it was a 15-year-old who was driving an SUV that caused a deadly four-vehicle crash near Willmar on Saturday. The teen’s name and condition have not been released. The accident killed 29-year-old Justin Gustafson of Redwood Falls and critically injured his father, John Gustafson. Investigators say the teen’s SUV failed to stop at a red light at Highways 71 and 7 and broadsided a pickup truck, which then rolled onto two cars. Five other people were hurt, but none with life-threatening injuries.