Eugene Maraventano, 64, of Goodyear, Arizona, was charged with fatally stabbing his wife and adult son in their suburban Phoenix home. He told the police that he killed them out of a fear that he had given his wife HIV from prostitutes he used to frequent and out of concern about what would become of his jobless son.

He believed his wife, Janet Maraventano, 63, was ill and feared she might test positive for cancer or a disease he had given her from prostitutes he slept with when he worked for a rail line in New York.

He planned to kill himself after killing his wife, but wondered what would become of his son, Bryan Maraventano, 27, after his suicide. He told investogators that his son played video games all day and had no girlfriend or job.

Police say they haven’t yet been able to confirm whether Eugene Maraventano had HIV or whether Janet Maraventano had any ailments that her husband said he was worried about.

Eugene Maraventano made several unsuccessful suicide attempts after the killings and called authorities Saturday to say he had carried out the stabbing deaths a few days earlier, police said. He got a 14-inch knife from the kitchen of his two-story stucco home in Goodyear and went into the upstairs master bedroom, where he stabbed his sleeping wife twice. Then he stabbed his son after the son answered a knock on his bedroom door from his father. Maraventano was treated at a hospital for injuries he suffered during his suicide attempts and is now in jail on $2 million bail.

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