An 18 wheeler jacknknifed and caught on fire this morning on I-65 South. The accident occurred near the 18 mile marker in Satsuma at around 4:00 AM. At the moment, the cause of the accident is unknown. There were minor injuries, but according to Local 15 News, everyone who needed medical attention was taken to the hospital by fellow drivers. Authorities say that the interstate will be closed at some point today in order to remove the wrecked vehicle from the scene.