HACKENSACK, N.J. (CBSNewYork) — A large power outage was reported in Bergen County, New Jersey, on Thursday.

At the peak of the outage, about 57,000 customers in Bergen and Hudson counties were without power.

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Service was restored for most customers by 7 p.m.

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The outage appeared to be affecting Hackensack and surrounding towns.

Hackensack University Medical Center had to run on backup generators.

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There’s no word yet on what caused the outage.