Mangione, accused of killing health executive Brian Thompson, has pleaded not guilty in state and federal casesLuigi Mangione is scheduled to appear at Manhattan federal court on Monday morning in relation to the murder of UnitedHealthcare executive Brian Thompson.Mangione stands accused of the 4 De cember 2024 killing of Thompson on a New York City street. He faces murder and weapons charges in his state-level case, and stalking counts in the federal proceedings. Continue reading... ...read more read less