Luigi Mangione’s guilty plea to federal charges in the killing of UnitedHealthcare CEO Brian Thompson raises questions about the future of his state murder trial.

A trial for Mangione’s state case in connection with the killing of UnitedHealthcare CEO is set to begin next month.

Luigi Mangione, the 28-year-old accused of murdering UnitedHealthcare CEO Brian Thompson, could plead guilty to federal charges, a source close to the matter has said.

Luigi Mangione plans to plead guilty in the federal case concerning Brian Thompson's death. This plea could avert a federal trial and potentially dismiss state murder charges.…