Luigi Mangione pleads guilty in federal case, admits shooting UnitedHealthcare CEO Brian Thompson CBS NewsLuigi Mangione pleads guilty to federal charges in the killing of UnitedHealthcare’s CEO NBC News‘I shot Mr Thompson’: Luigi Mangione describes his planning and the killing of health insurance CEO The GuardianFury at Health Insurers Persists After the Killing of a Company Executive The New York TimesLuigi Mangione plea: Friday court hearing brings status of state, federal cases of accused healthcare CEO killer into question ABC7 New York