KENOCKEE TOWNSHIP, Mich. (CBS DETROIT/ AP) — A 13-year-old boy has died and a 10-year-old boy was critically injured Thursday night after the go-kart they were riding on was hit by a vehicle in Kenockee Township.

The boys were taken to a local hospital where the older boy was pronounced dead.

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The St. Clair County sheriff’s office says from preliminary investigation the boys ran a stop sign before being hit and were going about 45 miles.

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St. Clair County Sheriff Tim Donnellon says the names won’t be released yet, but the boys were related calling it an “extremely tragic incident.”

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