A 21-year-old man has pleaded insanity to reduced charges in the killing of a motorist on the Interstate near Wisconsin Dells. Sauk County prosecutors have agreed to reduce an intentional homicide charge to reckless homicide against Zachary Hays — and he entered pleas Monday to that, plus three counts of reckless endangerment. He’ll undergo a mental exam, and he still faces charges in Milwaukee and Columbia counties as part of a day long crime spree on May first. Investigators say Hays shot and killed 42-year-old Gabriel Sanchez in their West Allis apartment building — and he later drove to Wisconsin Dells where he reportedly shot at vehicles and killed passenger Tracy Czackowski (shuh cow’ skee) while her family was heading home from the Dells to suburban Chicago. His lawyer first mentioned Hays’ mental health issues several weeks after the incidents.