The Reno Fire Department says a Hazmat situation inside the Walmart store on Kietzke Lane in south Reno turned out to be a pipe leaking refrigerant. Fire officials say just before 8pm they received reports of a white fog in the refrigeration room. When HAZMAT team arrived on scene, they discovered that a faulty pipe was releasing refrigerant.  Reno Fire says no injuries were reported and the store was evacuated during the investigation.