One Dead, Three Injured In Crash Near Dunkerton Get our free mobile app One person was killed and three others injured in a single-vehicle accident in rural Black Hawk County over the weekend. The crash occurred Sunday around 6 PM on East Mount Vernon Road near North Nesbitt Road, northeast of Dunkerton. According to sheriff's officials, the four people were in a vehicle that went out-of-control. Two people were ejected when the vehicle rolled. Authorities said one person died at the scene. The other three occupants were taken to a Waterloo hospital for treatment of undisclosed injuries. According to sheriff's officials, one of the injured victims was later air-lifted to University of Iowa Hospitals and Clinics in Iowa City.