The sheriff of Columbia County says there was an explosion late Wednesday night at an ethanol plant in Cambria, the Didion Milling plant on Highway 146. Cambria is about 50 miles southwest of Fond du Lac, in Columbia County. According to ABC sister station WKOW, the local ambulance service says there were multiple burn injuries reported and more than three medical helicopter flights were sent to the scene. Power went out around the village late Wednesday night and fire crews are warning people to stay away from Highway 146. Sheriff Dennis Richards says families are being asked to go to the Cambria Highway Shop at 119 E. Second Street. The Madison Fire Department tells WKOW it's sending firefighters to the scene. The Dodge County Sheriff's Office is providing assistance for traffic control.