Mangione admits to shooting insurance CEO, pleads guilty to federal charges The Washington PostLuigi Mangione pleads guilty to federal charges in the killing of UnitedHealthcare’s CEO NBC NewsWhat to Know About Luigi Mangione’s Double Jeopardy Claims WSJOutrage at UnitedHealth and Other Insurers Persists After Brian Thompson Killing The New York Times“They stole the state’s thunder,” lawyer says as Luigi Mangione’s plea could stall New York case WBAL-TV