By: KDKA-TV News Staff

PITTSBURGH (KDKA) – A transformer fire knocked out power to thousands of people in Swissvale overnight.

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The fire happened just after 11:30 p.m. near Westmoreland and Columbia Avenues.

At one point, more than 4,000 Duquesne Light customers were left in the dark.

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Most recently, more than 2,000 are still without power.

It is unknown at this time what caused the fire.

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