The couple accused of leaving their infant son alone until he died will have separate trials. 20-year-old Cheyanne Harris and 28-year-old Zachary Koehn are both charged with 1st degree murder in the death of their four-month-old son Sterling. Harris is set to stand trial in Chickasaw County District Court on January 31, 2018. Koehn’s trial is scheduled for January 3, 2018.