FIRE CREWS were called to a disused school site in Leicester Road, Tilbury.
Crews used one hose reel to tackle a fire at the derelict Jack Lobley school where one of the classrooms was reported to be well alight.
Firefighting operations continue.
This is the third time the fire crews have been called to this location this summer.
The fire was out by 20:05 hrs. The cause is thought to be deliberate.