A 17-year-old boy will appear in court facing arson charges after police say he set light to an office at Cowra High before students returned Sunday. Classes were due to restart for the new week when smoke was spotted. Fire crews put out the fire swiftly. Police and fire investigators spent hours at the site. The school stayed closed for the day. Authorities say no one was hurt. Detectives are still investigating the cause. The teen is expected to plead innocent. Community members voiced concern over the incident. The fire alarm activated shortly after the blaze began. Local fire services arrived within minutes. The investigation will determine whether additional charges are warranted. The court appearance is scheduled for the near future. If convicted, the boy could face serious penalties. The incident has sparked discussion about school security.