(Aurora, OR)  --  Authorities say an 87-year-old man who had been reported missing for months was found dead yesterday.  Investigators say the man's son, 59-year-old Edward Fitchett, told police his father had run off with a "mystery woman," but officers who executed a search warrant yesterday at the home of 87-year-old Henry Conley Fitchett, Jr. found the elder man's body in the home he shared with his son on Hubbard Cutoff Road Northeast in Marion County.  Edward Fitchett is charged with first-degree theft, first-degree criminal mistreatment, first-degree identity theft, and abuse of a corpse.