Jackson County authorities say they have arrested and charged the adoptive parents of a 4-year-old boy who apparently drowned in a bathtub at the family home in Andrew.

The Jackson County Sheriff’s Department says 29-year-old Danielle Lynn Holdgrafer was arrested Thursday on charges of first-degree murder, and her husband, 31-year-old Andrew Holdgrafer was arrested on charges of child endangerment resulting in the death of a child.

The boy, Collin Parker William Holdgrafer, apparently drowned June 12.

The sheriff’s office says Andrew Holdgrafer made a 911 call on the way to the Jackson County Regional Health Center in Maquoketa, where the boy was pronounced dead. It was not known if either of the parents had an attorney.