Crews from the Contra Costa County Fire Protection District responded to a report of a smoking school bus on Willow Pass Road near the Interstate Highway 680 on-ramp at 2:39 p.m., a fire dispatcher said.
Once they arrived, an apparent fire had been put out and everyone on board had been able to get off the bus safely, the dispatcher said.
A school district employee said there were students on board but nobody, including the bus driver, was injured.