Luigi Mangione appears in Manhattan Supreme Court for a suppression of evidence hearing in the killing of United Healthcare CEO Brian Thompson, Dec. 2, 2025. That inmate is Luigi Mangione, according to a person in law enforcement, who asked not to be named because they were not authorized to speak publicly on the matter. Mangione is accused of murdering UnitedHealthcare CEO Brian Thompson on a midtown Manhattan street in December 2024. The Minnesota man, 36-year-old Mark Anderson of Mankato, when asked by Bureau of Prisons personnel at the Metropolitan Detention Center in Brooklyn for his credentials, produced a Minnesota driver's license, prosecutors said. "Anderson also displayed and threw at the BOP officers numerous documents," an FBI agent who signed the complaint wrote.