Killer admits to decades-old cold case slaying after investigators lean on new forensic evidence: officials

Mark Sanfratello, 73, was sentenced to 20 years in prison after pleading guilty to the 1983 first-degree manslaughter of his girlfriend Teresa Peroni in Oregon. The case, reopened in 2024, was solved using new DNA evidence and modern forensic techniques, leading to his extradition from California in 2025.