Child Death Trial Continues

MOUNT PLEASANT, Iowa (KCRG) - Witnesses are taking the stand today in Chickasaw County in a case regarding a four-month-old that was allegedly murdered.

Zachary Koehn faces charges of 1st-degree murder and child endangerment in the death of his son Sterling in Alta Vista.

Prosecutors say Koehn and the boy's mother, Cheyanne Harris, left him in a baby swing for 9-14 days with no food, water or other care. The child died from a combination of malnutrition, dehydration, and infection from E-Coli bacteria present in a diaper that may not have been changed for more than a week.

The trial continued today with a DCI agent wrapping up testimony from yesterday. The agent had interviewed Zachary several times and said he was cooperative. The agent said Sterling's mom provided most of the care for the child.

Zachary told the agent that he played with his son just a day before Sterling was found dead. Zachary told the agent that he saw nothing wrong when they had played together.

Iowa State Medical Examiner Dr. Dennis Klein also took the stand today, calling the death of the child a denial of critical care and a homicide.

Later today the state medical examiner is expected to take the stand to explain the injuries Sterling had.

A bug expert is also expected to take the stand and explain the maggots found in the baby's diaper. The specialist is expected to explain why investigators believe the child was left unattended for more than a week.