Toby Keith's tour bus caught fire early Monday morning on I-65 near Lebanon, IN. 

The singer wasn't on board at the time, according to reports forma local television station out of Indianapolis. Backup singers and crew members were on board the bus when the fire occurred, but no injuries were reported.

The bus was headed back to Nashville after Toby's Sunday night show in Chicago when the driver saw flames shooting from the back of the vehicle. He successfully pulled the bus over into the emergency lane after the vehicle lost power.