COLCORD — Delaware County authorities think possible bone fragments found under a house could belong to a man missing since 1988. Sheriff's Department Capt. Robert Rowley says the fragments will be sent to the state Medical Examiner's office to be analyzed. Rowley says an anonymous tip last week led authorities to the fragments and that the tip indicated the bones could be those of 60-year-old Johnnie Ball, who was reported missing from his Kansas, Okla., home on Sept.