Coroner Rules Teen's Death Hypothermia

A Fremont County coroner has ruled that a 17-year-old girl found near Riverton died of hypothermia. (washingtontimes.com) The girl’s body was discovered in February near Riverton, and the ruling came after a coroner’s investigation into how she died. The available report identifies her only by age and says the case remained under official review. (washingtontimes.com) Hypothermia happens when the body loses heat faster than it can make it, driving core temperature down to dangerous levels. In Wyoming, that risk can turn deadly outdoors in winter, especially when exposure lasts for hours. (mayoclinic.org) In Fremont County, the coroner’s office is responsible for investigating unattended or unexpected deaths and certifying the cause and manner of death. The office says it uses forensic investigation and serves families, law enforcement and public health agencies. (fremontcountywy.org) The ruling also fits a broader pattern in the county. Coroner Erin Ivie told Fremont County commissioners in October 2025 that the county had recorded two hypothermia deaths in the first three quarters of that year. (county10.com) Ivie said accidental deaths were rising locally, with 37 recorded through that 2025 report, and drugs or alcohol were involved in 21 of them. Riverton had the highest number of coroner calls in the county at 40, ahead of Lander at 33. (county10.com) Fremont County’s coroner is Erin Ivie, who was appointed on Nov. 1, 2022, according to the county website. The office is based on South Federal Boulevard in Riverton and lists death investigation as one of its core public duties. (fremontcountywy.org) The case closes one question — what killed the teenager — but leaves the surrounding circumstances to the inquest process and any further findings authorities choose to release. (washingtontimes.com)