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Mangion's court appearance revealed new charges against him as federal prosecutors unsealed evidence, including harrowing notes from a personal notebook indicating planned violent actions against the insurance executive. In court, Mangion appeared hesitant, keeping his head down and refraining from entering a plea. Authorities detailed a disturbing account of the suspect's intentions, with the notebook suggesting that Mangion had meticulously planned the murder, describing a chilling countdown to the act itself.