A fire has severely damaged a high school in St Clair on the first weekend of the school holidays.
Emergency services were called to Endeavour Avenue after reports that a school was on fire at about 1.30am, Sunday, June 29.
Police said the blaze damaged the south western side of the school which houses science blocks, the canteen and a number of classrooms.
Police have yet to determine if the fire is suspicious.
Investigators examined the school on Sunday morning once the site was declared safe.
Officers are door-knocking surrounding homes in the hunt for witnesses.
Police are urging anyone with information about this incident to call Crime Stoppers on 1800 333 000.