By Crash News Writer 
Wagner, SD (July 6, 2025) – A Yankton woman lost her life following a single-vehicle crash early Saturday morning just south of Wagner, according to local authorities.
According to reports, Kristi Selwyn, 44, of Yankton, was driving a 2002 Ford F-150 northbound on 394th Avenue near 299th Street when she lost control of the truck. Investigators with the South Dakota Department of Public Safety said Selwyn over-corrected, causing the vehicle to enter a yaw, overturn, and come to rest in a ditch.
The crash occurred around 1:45 a.m. on June 28, approximately four miles south of Wagner. Selwyn was transported to a nearby hospital where she later died from her injuries. A passenger in the truck, Dewey Emery Cournoyer, 47, of Wagner, sustained minor injuries in the rollover accident.
The South Dakota Highway Patrol is continuing to investigate the circumstances surrounding the crash. All details remain preliminary as they work to determine what caused the driver to lose control.
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PLEASE TAKE NOTICE
The information in this article is based on initial reports from local authorities and may be subject to updates as investigations continue.
- The identities of those involved in the incident have not been released pending official confirmation and notification of next of kin.
- Further details about the accident, including toxicology results and potential charges, will be shared as they become available.
- Road closures and traffic updates related to the accident scene can be found by checking with local authorities or traffic monitoring services.
The content of this news story is for informational purposes only and should not be considered legal or medical advice. All information is based on public reports at the time of publication, and details may change as investigations progress. Readers are encouraged to seek legal counsel if they or someone they know have been involved in a similar incident. The publisher assumes no liability for actions taken or not taken based on the information provided in this article. Learn more with our disclaimer.