MINNEAPOLIS (WCCO) — A 21-year-old woman has died after her Jeep Patriot collided with a tree in western Wisconsin on Wednesday morning.

The Wisconsin Department of Transportation says the crash happened at about 5:25 a.m. on County Highway W NB, at County Highway S, in Dunn County near Colfax.

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The Dunn County Sheriff’s Department received a 911 call from a driver who said that another car had collided with a tree in Grant Township. A state patrol trooper and Dunn County sheriff’s deputies responded to the scene and found a 21-year-old woman dead at the crash site.

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Law enforcement says the driver was not wearing a seat belt.

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The crash remains under investigation.