Plea comes weeks before separate case is scheduled to start in New York, and could throw proceedings into disarray‘I shot Mr Thompson’: Luigi Mangione describes his planning and the killing of health insurance CEOLuigi Mangione pleaded guilty on Friday in a federal case in relation to the killing of UnitedHealthcare executive Brian Thompson in 2024.Mangione confessed that he shot and killed Thompson outside a New York City hotel on 4 December 2024. In his federal case, he faced stalking charges,