(AP) — A portion of the Wahoo Public Library ceiling has collapsed under the weight of accumulated water.

A frozen line for the fire suppression system had burst Tuesday, allowing water to pool until it overcame the ceiling material and taped joints.

Library workers had spotted water leaking from the ceiling in the children’s area and called the fire department. Firefighters found the bulging ceiling threatening to burst, so firefighters and city workers raced to cover bookshelves with plastic tarps before the ceiling finally gave way.

Workers will take some water-damaged books in plastic-lined boxes to a nearby meat locker, where they will be freeze-dried to prevent mold. Most of the library’s 32,000 volumes will be removed so workers can repair the ceiling and replace carpeting.