Firefighters extinguished a contents fire in a restroom at Osborn Middle School this morning, preventing it from spreading into the structure. Crews were dispatched around 10 a.m. for a fire alarm and found smoke impacting multiple classrooms. The incident was upgraded to a First Alarm due to the size of the building and potential for extension. Ladder crews used fans to clear the smoke. All students were evacuated to designated areas and accounted for. No injuries were reported. Investigators are working to determine the cause. #PHXFire