Luigi Mangione pleaded guilty Friday to two federal stalking charges connected to the 2024 killing of UnitedHealthcare CEO Brian Thompson, a major development that could complicate New York prosecutors’ separate murder case against him.

Mangione, 28, not only pleaded guilty in Manhattan federal court to two stalking charges resulting in Thompson’s death, but he also admitted to killing him two years ago on Dec. 4, 2024. Each count carries a maximum sentence of life in prison.

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