Thousands of books are being moved from the Clementinum, which houses the National Library, after an accident left parts of the building flooded. The library has not said whether the cause is related to the heavy precipitation of recent days. More than 4,000 historical and foreign volumes had to be evacuated and the reference centre closed on Thursday as water ran into offices and gallery spaces. The water was quickly pumped away however the shelves are soaked. The affected areas will be opened again on August 8.