An investigation is under way into the cause of a large fire at the former North Wales Hospital in Denbigh.
Up to five crews, including the aerial ladder platform, tackled the fire at the Grade II-listed building, which broke out at just before 4.30pm on Monday afternoon. It was eventually put out around five hours later.
Crews from Colwyn Bay, Denbigh, Ruthin and Rhyl tackled the fire but the extent of damage caused remains unknown.
Last September, police warned trespassers to stay away from the site after the roof of the main building collapsed. The former psychiatric unit has been frequently targeted by arsonists since its closure in October 1995.
It has been earmarked for future housing by developers and is the subject of a compulsory purchase order from its owners, Freemont, who lost a High Court appeal to prevent Denbighshire County Council’s actions.