Tucson Fire responded to a call of a bus on fire Thursday night around 10.
The bus was in a locked Sunnyside School District bus yard located at Ginter Road and Tucson Boulevard.
There were no students or drivers on board the bus and the fire did not spread to other buses.
Investigators are still trying to determine the cause of the fire, but weather has not been ruled out since there was lightning in the area at the time the fire started according to Mary Veres with the Sunnyside School District.
The fire did not impact school transportation.
