LIVERMORE -- Students were evacuated from Granada High School Thursday morning while crews investigated reports of smoke filtering into a classroom, a battalion chief said.
Firefighters responded to the school about 12:15 p.m. after reports that smoke was coming into a class that was in progress, Livermore Pleasanton Battalion Chief Mike Miller said. Students at the school were evacuated to the football field after a pull-alarm was activated in the affected classroom.
Fire crews discovered the smoke to be coming from an air conditioning unit on the roof, which began producing smoke when its insulation got too close to the motor, Miller said. Firefighters contained the electrical issue and cleared the scene at 12:42 p.m.
All students were back in their classrooms by 12:45 p.m., Miller said. No injuries were reported in the incident.