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Isaiah Theis
Isaiah Theis

UPDATE: Autopsy report released in death of Isaiah Theis

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news River Falls, 54022

River Falls Wisconsin 2815 Prairie Drive / P.O. Box 25 54022

The Polk County Sheriff's office has released preliminary autopsy findings related to the death of Isaiah Theis, the 2-year-old boy from Centuria, Wis. who died earlier this week.


According to the autopsy, completed by the Midwest Medical Examiner's Office in Ramsey, Minn., the boy was a "normally developed, well nourished" toddler.

The report indicates that there were "no life threatening traumatic injuries or natural disease processes identified."

Also, the report states, there were no fractures identified.

Listed as the cause of death? "Probable hyperthermia." The manner of death will not be determined until the Sheriff Department's investigation is completed, Polk County Sheriff Peter Johnson indicated. A toxicology report has yet to be completed as well.

Isaiah was found dead in the trunk of a car that was located outside an auto repair business that his father, Justin, runs at their rural Centuria home.

Polk County Chief Deputy Steve Moe said his officers regret not trying to enter the trunk before the vehicle’s owner came by to retrieve it late Wednesday night.

Isaiah wandered off Tuesday evening from his rural home near Centuria. Sheriff Peter Johnson told reporters yesterday that up to 2,450 volunteers took part in a search – many of whom learned about it through social media.

Johnson said officers assumed that all the cars at the shop were locked before the child disappeared. Moe said deputies did not have access to any of the keys, and he now wishes somebody would have asked.

Moe said searchers checked the area several times and turned up nothing. He said it’s way too early to determine how Isaiah entered the trunk, or how he died.

The state Justice Department is helping with the investigation – and for now, officials rule nothing out.

St. Croix County dispatch records show that 19 officers from the sheriff's department assisted in search efforts on Wednesday. More than 2,400 volunteers helped in the search for the missing boy earlier this week.