UPDATE: Highway is now open
A tractor trailer has overturned near Crider on Ky. 91 between Princeton and Fredonia. The Kentucky Department of Transportation has closed the road. Early reports indicate the truck may be carrying some type of explosive material, perhaps ammonium nitrate and other chemicals or materials.
It's unclear at this time how long the highway will be closed. A detour has been established via Ky. 70 and Ky. 139.