Fire crews are in attendance at a fire at a derelict school on Waterton Road in Wakefield.
The fire is approximately 50 X 50 metres, West Yorkshire Fire and Rescue Service said.
Advice to local residents is to keep doors and windows closed.
Crews from Ossett Fire Station, Wakefield Fire Station, Dewsbury Fire Station and Normanton Fire Station are all in attendance alongside two specialist units.
More to follow.