Mohave County Sheriff’s deputies responded to a single vehicle rollover accident on Mt. Trumbull Loop at milepost 3, south of River Road in St. George, early Monday (10/12) evening. Deputies happened to be in the area, approximately a few blocks away when they observed a big cloud of dust. At about 5:22 p.m., deputies responded to the scene and observed a Ford Expedition had rolled off the roadway. Deputies attempted to administer CPR to the victim which was unsuccessful. Matthew Harris Putnam, 47, of St. George, Utah was declared deceased at the scene. The victim was the only occupant in vehicle. Deputies were assisted by Arizona Game & Fish, St. George Fire Department and Gold Cross Ambulance. Investigation continues pending autopsy results.