Nassau County police are investigating a fatal car fire in Syosset, police said Wednesday.

Police responded to Southwood Circle and the intersection of Belmont Circle and found a 2006 Mercedes-Benz SL 500 on fire about 4:35 p.m., said Nassau Det. Vincent Garcia, a department spokesman.

“The interior was fully engulfed,” said Garcia.

The occupant of the vehicle was pronounced dead at the scene, Garcia said.

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Syosset Fire Department officials responded to the scene and extinguished the blaze, Garcia said.

Police and fire officials were on the scene investigating.