The Marshall County Sheriff's Office announced their investigation of some human remains that were found in the Iowa River, which they believe may actually be prehistoric in nature.

In early August, Marshall County Conservation authorities directed Marshall County Deputies to a remote area of the Iowa River where a lower human jawbone was discovered by staff as they conducted a biological wildlife survey.

The original announcement was that the sheriff's office was investigating possible human remains.

Crime scene investigation site
(STOCK) Lazar Cvjetkovic

The announcement from the sheriff's office said that the jawbone was intact, but its condition was determined to be deteriorated and indicated that the jawbone was several years old.

A search of the area was conducted to see if there were any other human remains in the area, and the search turned up three additional potential human bones nearby, believed to be linked to the jawbone that was found.

The Marshall County Examiner collected the suspected human remains, they were sent to the Iowa State Medical Examiner's Office for further testing.

Marshall County Sheriff's Office
Marshall County Sheriff's Office

The bones were then transferred to the Office of the State Archaeologist at the University of Iowa for further examination. It was determined that the remains most likely belonged to a 'prehistoric; Native America - like a middle to older age male.

Additional research in the area is expected in the future.

Read more at the Marshall County Sheriff's Office

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