Authorities say a man has been killed in an ATV crash in northeast Wyoming's Crook County.

The Wyoming Highway Patrol says the crash happened on Nov. 12 near milepost 10 on Rifle Pit Road, north of Aladdin.

The patrol says 33-year-old South Dakota resident Scott Grackle was riding eastbound when he lost control of his ATV and flipped it.

Grackle, who was not wearing a helmet, was found partially pinned underneath the ATV.

The crash brings Wyoming's year-to-date highway death toll to 138.

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