LOS ANGELES (CBSLA) — More than 100 firefighters battled a blaze early Tuesday in a downtown Los Angeles clothing warehouse in the Fashion District.

The fire was reported at 4:49 a.m. at 771 E. Pico Boulevard, business called Price Less apparel, and declared out within 47 minutes.

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As many as 117 firefighters battled the flames, which raged out of the top of the building, where the roof had collapsed, leaving only charred beams. Despite the packed-in nature of the neighboring buildings, firefighters were able to keep the flames from spreading.

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At one point, electrical lines were spotted popping and sparking near the fire.

One firefighter was injured. He was taken to a hospital in fair condition for treatment of “facial trauma,” LAFD spokesman Brian Humphrey said.

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The cause of the fire is under investigation.