New York State Police are investigating a fatal single-vehicle crash that occurred Monday night on the Northern State Parkway in Smithtown.

Troopers responded around 8:30 p.m. on May 25 to the westbound lanes near the New Highway overpass at Exit 46. At the scene, they found a 2010 Volkswagen Eos split in half, with the driver, the sole occupant, ejected from the vehicle.

Investigators determined that erratic driving and unsafe speed caused the vehicle to crash.

The victim’s identity has not yet been released. The investigation is ongoing.