A body was found inside a burned out recreational vehicle in off U.S. 1 in St. Augustine Thursday night, authorities say.

Fire rescue responded to Dixie Customs on Avenue A around 7:30 p.m. after an RV caught fire and set two junk cars on fire, says Jeremy Robshaw with St. Johns County Fire Rescue.

Crews put out the fires, but upon inspecting the RV found a body inside. At this time, Robshaw says crews do not know what led to the person's death but are investigating.

The cause of the fire is unknown at this time. Crews are also investigating that.