Medical examiner: Iowa baby severely underweight at death

Zachary Paul Koehn, charged with murder and child endangerment causing death. (Chickasaw County Jail)

Iowa's chief medical examiner has testified that a 4-month-old infant found dead and maggot-infested in a baby swing last year weighed only a few ounces more than his birth weight.

The Courier reports that testimony came Thursday in the murder trial of the baby's father, 29-year-old Zachary Paul Koehn, who also faces a child endangerment count in the August 2017 death of his son, Sterling Koehn. The baby's mother, Cheyanne Harris, is also charged and faces a separate trial.

Dr. Dennis Klein said the baby weighed just under 7 pounds (3.18 kilograms) at autopsy. Klein said the baby should have weighed about 11 pounds (5 kilograms).

An autopsy showed the baby died of malnutrition, dehydration and an E. coli infection caused after he was left in a soiled diaper for up to two weeks.

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