One person was killed in a rollover crash in Dodge County. The crash happened Friday night on Highway MM near Highway EM in the town of Emmet. A preliminary investigation shows that a Mercedes Benz was traveling eastbound on MM failed to negotiate a curve and entered the south ditch striking a culvert causing the vehicle to overturn. A passer-by attempted to extricate the driver but was unable to after the vehicle became fully engulfed in flames. The male driver of the Mercedes Benz was pronounced dead at the scene.