(Jefferson County) A motorist was killed Wednesday night in Jefferson County. The crash occurred just before 7pm on State Highway 12 near Airport Road in the Town of Oakland. Authorities say a sedan was eastbound when it collided head-on with a westbound SUV. The driver of the sedan was pronounced dead at the scene. All the occupants of the SUV sustained serious injuries and were transported to UW Hospital in Madison. The incident remains under investigation.