NEWARK, N.J. (CBSNewYork/AP) — Authorities say a worker was struck and seriously injured by a moving airline propeller at Newark Liberty International Airport.

Port Authority of New York and New Jersey police department spokesman Joseph Pentangelo says the accident occurred around 2:20 a.m. Saturday in a maintenance area of the airport across from Terminal A. But further details were not immediately available.

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The injured woman, a 54-year-old Orange resident who works for United Airlines, was taken to University Hospital with a serious head injury.

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Officials say the accident didn’t disrupt airport operations.

Authorities say the plane was not on a runway at the time of the accident, which remains under investigation.

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)