UPDATE: Jefferson Central Fire District Chief Carl Anderson said there was one person in the RV, and that person exited the RV without injury.
Rigby Firefighters sent three engines to combat the fire.
The cause has not been determined.
This RV caught on fire at around 11:24 a.m. Thursday on US Highway 20 at Milepost 322 in Rigby.It is not yet known what caused the fire or if there were any injuries
ITD says to drive with extreme caution.