DeFeo, 69, was pronounced dead at 6:35 p.m. Friday at the Albany Medical Center, state corrections officials said in a statement. IE 11 is not supported. In 2006, in a jailhouse interview, DeFeo Jr. claimed that he only killed his father and mother, and after that, his eldest sister, Dawn, because she murdered the other siblings before DeFeo killed her. A family of 7 paid with their lives, it just took one of them 47yrs to die while the rest went quickly. To get the father. One of those was a .35 caliber Marlin rifle. DeFeo, Jr. was born in Brooklyn, New York City, the eldest son of Ronald, Sr. and Louise Brigante. . An autopsy . Ronald DeFeo, 69, died Friday at Albany Medical Center, where he was taken Feb. 2 from a prison in New York's Catskill Mountains, the state Department of Corrections and Community Services said. He later confessed to the murders, was tried, found guilty, and incarcerated. On November 13, 1974, Ronald DeFeo, Jr. killed his entire family. Ronald DeFeo Jr. dead: The true story of the Amityville Horror killer 'The Staircase' : Where Is Michael Peterson Now? This story has been shared 160,327 times. Ron DeFeo, has died in prison. When Ronald DeFeo Jr initially reported the deaths of his family, he ran into a local police station and claimed they had been shot. Initially, he reported the murders himself, telling police someone had broken into the house and killed his family, and even claimed he thought the killer was Louis Falini, a mafia hitman. Learn More Here, From the Cecil Hotel to The Stanley Hotel, These Are the Most Haunted Hotels in America. Try again later. Close this window, and upload the photo(s) again. Ronald DeFeo, Murderer Who Inspired 'Amityville Horror,' Dead at 69 He was 69. Ron Defore's Instagram, Twitter & Facebook on IDCrawl Tim Stelloh is a breaking news reporter for NBC News Digital. Please reset your password. To celebrate, he enjoyed the night on Bourbon Street. The Albany County Coroner's Office, which is responsible for determining what caused his death, said it doesn't release such information except to relatives of the dead.