Six fire crews have been sent to tackle a blaze at a former pottery factory in Stoke-on-Trent. Firefighters were called to the former Royal Doulton site in Nile Street, Burslem, on Friday evening.
The building, which was last used by Royal Doulton in 2005 and is now a visitor centre, was subjected to an arson attack last year.
That fire caused damage to its roof. Investigators said it was too early to say what caused the latest blaze.