Ill. (WTVO) -- Illinois State Police (ISP) Troopers are mourning the loss of one of their own this holiday season after a fatal vehicle crash on Monday.

Around 9:42 p.m., ISP Trooper Clay Carns, 35, saw debris in a lane on southbound I-55, just north of Blodgett Road, near Channahon. The trooper turned on his emergency lights, parked on the shoulder and went to pick up the debris in the roadway.

A Chevrolet Silverado hit him while he was in the middle of the lane, leaving him in critical condition, police reported.

Carns was transported to St. Joseph Hospital in Joliet around 10:45 p.m., where he succumbed to his injuries.

Carns served 11 years as a trooper with ISP.

Authorities arrested the driver, 69-year-old John Fleet of Wilmington, Illinois. Fleet is charged with violating Scott's Law.

The suspect was not injured during the crash.

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