DPS and Copper Canyon Fire responded to a vehicle fire on Southbound I-17 Thursday evening. Spokesman Quentin Mehr says troopers responded for a horse trailer on fire just south of Camp Verde around 10:30-pm. Mehr says the occupants of the vehicle and the four horses in the trailer evacuated safely and without injury. Firefighters closed both lanes while they fought the flames. Once extinguished, traffic was allowed by in the outside lane.