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A member of the Ute Indian Tribe has admitted to using a cell phone while driving when she caused the death last year of the driver of a street sweeper on the Uintah and Ouray Reservation.

Wilda Annie Manning, 50, pleaded guilty last week in U.S. District Court to one count of involuntary manslaughter while within Indian Country for the June 3, 2015, death of Steven Goodrich, 25.

A second count of involuntary manslaughter, for having a measurable amount of a controlled substance or the metabolite of a controlled substance in her body, was dismissed as part of a plea deal.

Manning faces up to eight years in a federal prison when she is sentenced on Aug. 4 by Judge Jill Parrish.

The fatal crash occurred when Manning's GMC Yukon rear-ended the street sweeper on a Uintah County road running through the reservation community of Randlett.

Goodrich, who was not wearing a seat belt, was partially ejected and became pinned under his rig.

Manning, after being treated for minor injuries at the hospital, initially could not be found by investigators. However, Bureau of Indian Affairs police reported that she turned herself in Dec. 9 after learning of the arrest warrant.