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JERSEY CITY, N.J. — A Queens woman is now facing charges after a crash in which a Port Authority Police officer was struck and critically injured as he assisted at the scene of a prior accident in Jersey City.

On Wednesday afternoon, Amandeep Tiwana, 27, was arrested without incident and has been charged with assault by an automobile, the Hudson County Prosecutor’s office said.

Authorities believe Tiwana, of Flushing, was speeding when she struck Officer Peter Siano, III.

Siano remains hospitalized in critical but stable condition at Jersey City Medical Center, officials said.

On Tuesday, just after 12:30 a.m., the Port Authority Police officer was setting up flares at the scene of an earlier accident along Route 139, near Palisade Avenue, when he was hit by a speeding vehicle, police said.

Two Jersey City Police officers who were helping secure the scene of the prior crash and do traffic control also sustained minor injuries, officials said.

Authorities said Tiwana’s vehicle also crashed into several Jersey City Police cars, which were all unoccupied at the time.