All eastbound lanes of the Southern Parkway were closed Monday morning in Nassau County for an accident investigation, according to the state Department of Transportation.

State police said the incident, a one-car accident, occurred at about 4:30 a.m. and said the road was closed between Exit 24, Merrick Avenue, and Exit 25, Newbridge Road.

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Police said additional details were not immediately available and could not say how many people were in the vehicle — or how seriously anyone was injured in the crash. Police also said it was unclear how long the road would remain closed for investigation and cleanup.

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