Luigi Mangione, accused of murdering UnitedHealth Group CEO Brian Thompson in Manhattan, has pleaded not guilty to state charges that label him a terrorist. The 11-count indictment includes three murder charges, with potential life imprisonment on conviction. Federal charges also accuse Mangione of stalking and killing Thompson, which could make him eligible for the death penalty. The separate cases will proceed concurrently, and questions remain about the conflicting nature of the state and federal charges.