NEW YORK (CBSNewYork) — Two women are dead in a pair of unrelated vehicle accidents. A 27-year-old woman was killed Sunday morning in Old Westbury. Investigators said that she was driving a two door infiniti when she hit the rear end of a tractor-trailer on the Long Island Expressway.

The truck was parked on the shoulder of the Expressway near exit 39 east of Glen Cove Road.

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The driver was pronounced dead at the scene, criminal activity is not suspected.

And a 68-year-old Brooklyn woman died when she lost control of her vehicle while driving in Carle Place in Nassau County on Saturday night.

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According to police a medical problem caused the woman to become incapacitated and drive off of the road into a row of bushes and eventually crash into a sign post.

It was discovered that the woman had suffered cardiac arrest, attempts were made to revive the woman and she was transported to a local hospital where she was pronounced dead.

The woman did not have any passengers and no one else was injured in the crash.

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