Luigi Mangione, accused in the 2024 killing of UnitedHealthcare CEO Brian Thompson, is in discussions about a possible guilty plea on federal charges, according to people familiar with the matter. Mangione also faces an upcoming state trial for the murder of Thompson. Legal experts say a federal plea deal could affect how that state case proceeds. The talks are reported to be preliminary, and no final agreement has been announced. Mangione was charged in the death of Thompson, a shooting that drew widespread attention in December 2024. His state case remains separate from the federal charges, and the outcome of the plea discussions could reshape the legal proceedings. Further details about the possible deal or any court timeline were not disclosed.