Key facts
- Luigi Mangione plans to use an 'extreme emotional disturbance' defense in his murder trial.
- He is accused of killing UnitedHealthcare CEO Brian Thompson in December 2024.
- Mangione has pleaded not guilty to state murder, weapons, and forgery charges.
- His state trial is scheduled for September 8.
- Federal murder and weapons charges were dismissed, but a stalking charge remains.
Luigi Mangione appeared in Manhattan state court on Wednesday, after missing a previous appearance due to a paperwork error. Mangione is accused of fatally shooting UnitedHealthcare CEO Brian Thompson outside a hotel in Midtown in December 2024. He has pleaded not guilty to state murder, weapons, and forgery charges brought by Manhattan District Attorney Alvin Bragg. His state trial is set for September before Justice Gregory Carro. Mangione separately pleaded not guilty in April to federal murder, weapons, and stalking charges. U.S. District Judge Margaret Garnett previously dismissed the federal murder and weapons charges, leaving only the stalking charge, which carries a possible life sentence without parole. Jury selection for the federal case is scheduled to begin in September, with opening statements in November.