(Hardin County, IA) -- A 22-year-old Waukee man's charged with First Degree Murder in a six-month-old baby's death. Police found an unresponsive baby boy in an Iowa Falls apartment at 511 Washington Street on March 2nd. First responders attempted to revive the baby, but were unsuccessful and the baby was pronounced dead at the hospital. An autopsy found the baby suffered from injuries at the hands of another person and the death was ruled a homicide. Nicholas Edward Cox of Waukee was arrested September 21st. He's been charged with First Degree Murder and Child Endangerment Causing Death. Cox has been transported to Eldora and booked into the Hardin County Jail.