REDWOOD FALLS, Minn. (AP) — A partial skull that was discovered last summer by two kayakers in Minnesota will be returned to Native American officials after investigations determined it was about 8,000 years old.

The kayakers found the skull in the drought-depleted Minnesota River about 110 miles (180 kilometers) west of Minneapolis, Renville County Sheriff Scott Hable said.

Thinking it might be related to a missing person case or murder, Hable turned the skull over to a medical examiner and eventually to the FBI, where a forensic anthropologist used carbon dating to determine it was likely th...