Franklin County Sheriff Anthony Boen tells KDYN News that his department is investigating what appears to be an arson fire at the Franklin County yard in Ozark off of Airport Road. The Sheriff said he was contacted by an individual Sunday morning about 9:30am reporting the fire. Two full size dump trucks were destroyed by fire and a 3rd newer dump truck was damaged. Sheriff Boen said that there were 4 trucks parked together on the yard at the time. At this point no other information is available.