FIREBUGS set a derelict Elland mill ablaze last night.
They broke into a red brick mill next to the former Gannex mill on Dewsbury Road, off The Ainleys.
Fire crews went to the scene just after 7pm.
Two firefighters went into the smoke-logged property.
They found that a number of small fires has been started in a section of the building.
The crews used one hose reel to put out the fires.
They then made the building safe.