The Tri-State Fire District was called at 1600 hours on October 23rd for reports of an explosion and fire. Companies arrived to find a residential structure with Heavy Smoke & Fire showing from 3 sides. It was reported that workers were still in the house. Fire Crews made a coordinated fire attack while companies conducted a primary search confirming that there was no life endangerment. The fire was extinguished with three attack lines. No injuries were reported. The fire is currently under investigation. No more information is available at this time.