COTTONWOOD, Minn. (KFGO) – The state patrol is investigating a deadly rollover in southwestern Minnesota where a fire truck from the Wood Lake Volunteer Fire Department rolled on its side in the ditch during homecoming festivities in Cottonwood. The patrol report says drinking was believed to be a contributing factor. The driver of the fire truck and a six-year-old boy were first hospitalized in Marshall before they were transferred to Sioux Falls with life-threatening injuries. The child and a 43-year-old man were both passengers in the fire truck. The fire truck was driven by a 37-year-old man.