MINNEAPOLIS (WCCO) — Dozens of Minneapolis firefighters battled a blaze after an explosion at a metal recycling plant Friday in north Minneapolis.

The city’s fire department says crews were called to Northern Metal Recycling on the 2800 block of Pacific Street North at about 1:40 p.m. after a localized explosion in a processing hopper.

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The explosion caused a flash fire that went up the building’s roof stack, setting part of the roof on fire.

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Officials say the building was evacuated when crews arrived, and the fire was quickly put out. No one was injured.

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The cause of the fire is under investigation.