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Luigi Mangione 'Expected To Plead Guilty' To Federal Charges Over Brian Thompson Killing. Luigi Mangione is reportedly expected to plead guilty to federal charges over the killing of UnitedHealthcare CEO Brian Thompson. Sources told NBC News that negotiations over a potential deal were ongoing, although no agreement has yet been confirmed. Mangione, 28, is accused of fatally shooting Thompson on a Manhattan street in December 2024 before being arrested five days later in Pennsylvania. He is due in federal court on Friday and currently faces a charge of stalking resulting in death, which carries a potential life sentence. A federal guilty plea could lead Mangione's lawyers to seek the dismissal of some or all of his state charges under New York's double jeopardy rules. Mangione has pleaded not guilty to second-degree murder and seven other charges in the separate New York state case. His state murder trial is expected to begin in September and will be heard by an anonymous jury because of the high-profile nature of the case. Prosecutors say their evidence includes CCTV footage, fingerprints, DNA, a phone, a gun with matching ballistics and a notebook allegedly containing writings about killing an insurance executive.
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