Students at École secondaire catholique de Pain Court (ESPC) got to enjoy some morning sunshine Monday after staff at the school detected the smell of smoke inside the building.
Staff and students evacuated as a safety precaution and fire crews were called.
A team from Station 4 Dover responded and investigated. Officials say the traced the smell back to a malfunctioning rooftop HVAC unit.
Power to that unit was cut and repairs are underway.
After confirming that was the only cause of the smell and that there were no other hazards, firefighters issued the all-clear notice, and students and staff returned to class rooms.
