Mangione pleads guilty to federal charges in UnitedHealthcare CEO killing

Luigi Mangione has pleaded guilty to federal charges in Manhattan federal court regarding the fatal shooting of UnitedHealthcare CEO Brian Thompson in December 2024. The plea resolves the remaining federal charges against Mangione, who admitted to interstate stalking resulting in death and the execution of the attack.

During the proceedings, Mangione detailed the premeditation behind the incident, which occurred on 4 December 2024 outside a Manhattan hotel. He stated that he emailed UnitedHealthcare posing as an investor to gather information about their annual investor conference before travelling to New York. Mangione confirmed he shot Thompson from behind using a 3D-printed gun equipped with a silencer.

The federal plea introduces significant legal complexity due to Mangione’s concurrent New York state case. He faces eight charges in state court, including second-degree murder and criminal possession of a weapon. His legal team has filed motions to dismiss these state charges, arguing that prosecuting him twice for the same act violates constitutional protections against double jeopardy.

Despite the defence motions, the Manhattan District Attorney’s office has stated it intends to proceed with the state case. This stance creates an unresolved legal conflict, as the outcome of the dual prosecution remains uncertain pending judicial review of the constitutional arguments raised by Mangione’s lawyers.

Federal sentencing is scheduled for 18 December, with prosecutors recommending a term of 24 to 30 years. The final sentencing term is not yet determined, as the judge has not yet ruled on the prosecutor’s recommendation. Mangione, 28, now faces the intersection of federal resolution and ongoing state litigation.