UnitedHealthcare CEO's killer pleads not guilty to federal charges

Luigi Mangione, accused of killing UnitedHealthcare CEO Brian Thompson, pleaded not guilty to all federal charges against him on Friday. He also faces state charges in New York, where he pleaded not guilty, and Pennsylvania. Mangione's court appearance comes about a week after a federal grand jury indicted him on charges of murder, stalking and firearms offence in Thompson's killing.