WAUSHARA COUNTY, Wis. (WTAQ) - State and local officers are still investigating a one-vehicle crash in central Wisconsin that killed a 73-year-old woman. Diane Beutler of rural Coloma was pronounced dead at the scene. The crash happened Tuesday afternoon on Highway 21 in the Waushara County town of Richford. Officers said the car apparently veered across the center line and flipped onto its roof. Beutler was the only person in the vehicle.