Chet Nielson

Chet Nelson was arrested on August 22, 2019 and charged in the August 4, 2017 sexual assault of a 26-year-old woman in Teton, Idaho. She was walking in Victor City Park at around 1:00 am when she was grabbed by an assailant and violently assaulted. The victim resisted and was nearly killed. She had been strangled to the point where the blood vessels in her eyes burst from a lack of oxygen.

A DNA profile was obtained from the victim’s sexual assault kit. The FGG investigation was conducted by Colleen Fitzpatrick of Identifinders. The initial confirmation was made through the surreptitious sampling of a piece of chewing tobacco spit out by Nielson.

Nielson pled guilty to the offence and has been sentenced to 15 years in prison.


Boner, Jeannette. “Fitting the Pieces of the Puzzle.” Teton Valley News, January 29, 2020, last modified February 14, 2020. Accessed December 26, 2020.

Boner, Jeanette. “Fremont County Man Arrested and Charged with Felony Rape After Two-Year Investigation.” Standard Journal, August 28, 2019. Accessed December 26, 2020.

Grossarth, Eric. “Man Sentenced to Prison for Violent Rape of Woman in Case Judge Calls ‘One of the Worst Things I’ve Ever Seen’.” East Idaho News, January 21, 2020. Accessed December 26, 2020.


First Name Chet
Last Name Nielson
Other Names
Victims 1 (Details)
IGG Started 2019-08-00
Case Cleared 2019-08-22
IGG Org Identifinders


Case ID Name Age Case Opened Location Investigating Org Most Serious Charge Disposition Court
1250 n/a Jane Doe 26 2017-08-04 Teton, ID Teton CSO All sexual offenses, including rape, sexual assault, and child molestation Guilty plea entered by defendant Teton CO DIST CT

Last updated: February 9, 2024

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Case data and narrative licensed under CC BY 4.0: Dowdeswell, Tracey (2023), “Forensic Genetic Genealogy Project v. 2022”, Mendeley Data, V1, doi: 10.17632/jcycgvhm96.1. All other content, including photos, have been added.