(WBIR) Thousands of people were without power Saturday night after a fire at a KUB substation in northwest Knoxville.

According to the Knoxville Utilities Board, there was an electrical fire at a substation near the Cumberland Heights subdivision off of Western Ave at around 8:30 p.m. Knoxville firefighters were able to put it out using fire extinguishers.

At its peek, there were more than 6,000 customers without power, but power was restored by 10:45 p.m.

KUB is still looking in to what caused the fire to ignite in the first place.

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