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The manifesto allegedly detailed Mangione's motivations, including a troubling statement directed towards federal authorities. It included a disturbing message that seemed to absolve him of responsibility, while also expressing resentment towards a specific victim. Former NYPD detective Mike Marconi pointed out that the premeditated nature of the crime raises serious implications for the charges against Mangione, suggesting they may escalate from Murder Two to Murder One as more evidence emerges. It paints a picture of an individual who meticulously planned this act.