The vehicle flipped onto the roadway. Bowen, who was assigned to the Suffolk County Police Department's third precinct, was pronounced dead at the scene.
The investigation closed the eastbound Long Island Expressway for several exits.
Meanwhile, two separate accidents and a car fire closed westbound lanes through the area. All westbound lane closures were cleared and traffic is back to normal.
Eastbound lanes were closed at Exit 55 and westbound lanes were closed at Exit 58.
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