A section of roof at the National Library of Wales in Aberystwyth has been destroyed by fire.
Flames and smoke were seen coming from the roof at the rear and up to 300 staff and 100 visitors were evacuated from the building.
More than 30 firefighters attended, and it was confirmed by 18:30 BST on Friday that the blaze was out, just under four hours after it was reported. Library staff said it was not known how it began, but everyone was safe. Arwel Jones, director of public services at the library, said workers had been on the roof near to where the fire started, but it was impossible to say at the moment whether that was linked to the incident.