Police are investigating whether a fire at a derelict school building in north Belfast was started deliberately.
Firefighters took about an hour to bring under control the blaze at the former St Gabriel's Secondary School on the Crumlin Road.
Six appliances and 30 firefighters were sent to tackle the blaze at about 2100 GMT on Wednesday.
The building was badly damaged. Police said initial inquiries suggested the incident was not sectarian.
The former Catholic boys' school has been closed since 2008, after declining enrolments meant it was deemed to be unsustainable.