The South Dakota Department of Public Safety has released the name of Viborg woman killed in a one-vehicle accident Wednesday near Viborg. The victim, 75-year-old Mary Nelson was westbound on 459th avenue when she lost control of her 2020 Chevy equinox. The vehicle went off the roadway and entered the north ditch, ultimately rolling. She suffered life-threatening injuries and was ultimately flown to a Sioux Falls hospital where she would die due to her injuries. A passenger, 75-year-old Warren Nelson suffered serious non-life threatening injuries. He was taken via ambulance to a Viborg hospital.