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CAROL STREAM, Ill. — Police in Carol Stream are investigating a fatal crash that happened Friday morning.

Just before 6:30 a.m., a dark blue Infiniti G37X traveling westbound on North Avenue struck the rear of a red Freightliner box truck, just west of Bennet Drive.

Police said an officer in the area witnessed the crash. He arrived on the scene and extinguished a fire caused by the crash.

There were two men in the Infiniti, and police said the driver was pronounced dead at the scene. The passenger was transported to Central DuPage Hospital with life-threatening injuries. Police did not know his current condition

The driver of the Freightliner box truck was not injured.

The identification of the driver and passenger are being withheld, pending notification of their families.

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