On December 22, 1975, 22-year-old male victim John Abono, a resident of Concord, California, was reported missing. While specific details about his ethnicity were not publicly disclosed, Abono was later identified as one of the earliest known victims of serial killer John Sapp. The case remained unsolved for over a decade until a breakthrough in the mid-1980s linked Abono’s disappearance to a broader pattern of homicides.
John Sapp, a drifter with a long history of institutionalization
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