PART of the roof of the National Library of Wales has been destroyed by fire.
More than 30 firefighters attended the library in Aberystwyth yesterday afternoon after flames and smoke was seen coming from the roof at the building's rear.
Aled Gruffydd Jones, who takes over as head librarian in August, told the BBC: "Everybody is out and safe and all the procedures have been followed.
"We need to know what happened and how.
"I'm puzzled by how it could've started. Clearly we need an inquiry."
The library, which is home to millions of books, manuscripts, pictures and photographs, was established by Royal Charter in 1907.
The building, on Penglais Hill overlooking Aberystwyth, was started in 1911 and first occupied in 1916.
The library is closed today.