![Light on a state police vehicle](https://media.nbcconnecticut.com/2019/09/STATE-POLICE-LIGHT.jpg?quality=85&strip=all&crop=0px%2C0px%2C0px%2C0px&resize=320%2C180)
One person is dead and another has serious injuries after a vehicle crashed into a tree in Griswold on Sunday.
State police said both sides of Route 201 at Lestor Road were closed but have since reopened.
Officials said the car swerved and crossed the solid double yellow line, colliding with a metal beam guardrail and then into a tree.
The driver, 55-year-old David Mack of Jewett City, was pronounced dead at the scene. A 17-year-old passenger sustained serious life-threatening injuries and was transported to a nearby hospital for treatment.
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State police officials are investigating. Anyone with information is asked to call Troop E at 860-848-6500.