State police are investigating a fatal accident on the Southern State Parkway in North Babylon Thursday night.

Police said the single-car crash happened about 7:19 p.m. as the driver was heading westbound on the parkway, just east of exit 39. A preliminary investigation revealed that the driver - the only person in the 2002 Buick Century - lost control, and the car then veered off the north side of the parkway and struck a tree, police said.

Police have not identified the victim, pending positive identification from the medical examiner's office, they said.

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Any witnesses are asked to contact the New York State Police at (631) 756-3300.

It was unclear if the crash was weather-related.