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Multiple fire crews were called out to battle a large fire in downtown in Modesto, Friday afternoon.

Authorities tell ABC10 the fire started at a “large commercial building” on the corner of 8th Street and I Street. It is unclear if the building was vacant. The fire grew larger and spread to a neighboring building, Crescent Supply.

Both buildings were destroyed in the blaze, fire officials say. One firefighter was injured and transported to a local hospital. The condition of that firefighter is not known at this time.

Officials say H Street between 7th and 8th streets, and I Street between 6th and 9th streets, will remain closed overnight.

The cause of the fire has not yet been determined.

This is a developing story.