Human bones were uncovered at an Old Mission Peninsula excavation site this week.

According to the Grand Traverse Sheriff's Office, a Peninsula resident was excavating land when he unearthed several bones Monday. Photographs of the bones were sent to the county's medical examiner office at Western Michigan University. The bone photographs were examined and determined to be most likely human in origin.

An archaeological team from Western Michigan University and Michigan State Police Grayling Crime Laboratory personnel visited the property Wednesday. The investigators uncovered several other bones (human in origin) and remnants of a wood coffin and square nails. The bones were estimated to be over 100 years old.

The recovered materials and bones remain in the custody of the medical examiner's office. The find is not believed to be connected to any criminal activity, according to the Sheriff's Office.