"Amityville Horror" killer Ronald DeFeo — who killed his six family members in 1974 on Long Island — has died behind bars, according to officials.
DeFeo died Friday while serving a 25 years-to-life sentence at Sullivan Correctional facility in Fallsburg, New York, officials told Newsday. He was 69.
DeFeo was transferred to Albany Medical Center and pronounced dead at 6:35 p.m.
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An autopsy by the Albany County Medical Examiner’s Office will rule an official cause of death.
DeFeo, whose nickname was Butch, was convicted of killing his mother, father, two sisters and two brothers inside their home in Amityville home on Ocean Avenue on Nov. 13, 1974.