The death of the 18-year-old son of Indianapolis Colts coach Tony Dungy has been ruled a suicide, a medical examiner said Friday. James Dungy hanged himself from a bedroom ceiling fan with a leather belt, Dr. Jacqueline Lee of the Hillsborough County Medical Examiner's Office wrote in her final autopsy report. Authorities had ruled out foul play in December, but toxicology results were pending. Those tests were negative, except for caffeine and medication paramedics used in attempts to resuscitate the teen, Lee said. Dungy was found and cut down by his girlfriend on Dec. 22, less than a half-hour after last being seen alive, according to the medical examiner's office. The teen's girlfriend called paramedics, who attempted to resuscitate him. He was pronounced dead at a Tampa hospital.