Pryor, Okla. — An RV fire at the Rocklahoma concert in Pryor is under investigation. We're told the fire started around 5 a.m. Sunday, but the Pryor Fire Department had it under control by 6:30 a.m. The flames were mostly contained to the RV, but a nearby vehicle became hot as the fire burned. No one was injured. The cause of the fire is under investigation.