MIAMI --

A fire at a Miami warehouse is once again under control.

Firefighters were back at the building on Northwest 71st Street and Eighth Avenue on Sunday after the fire flared up again overnight.

On Saturday firefighters battled the blaze for more than 10 hours.

Firefighters said they believe the fire was sparked by some welding work that was being done inside the warehouse.

The building was being used by a company to store children's books to donate to elementary schools across South Florida. More than 30,000 books were destroyed in the blaze.

The total cost of the damage has not been determined.

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