Suspect in UnitedHealthcare CEO killing could return to New York on a governor’s warrant The Associated PressLuigi Mangione suffered from spondylolisthesis, a back condition. Experts say it can cause 'massive' pain. Yahoo LifeNYPD connects handgun, fingerprints to CEO killing suspect Fox NewsWhat We Know About Luigi Mangione: Alleged UnitedHealthcare Shooter’s Gun Matches Shell Casings From Scene, NYPD Says Forbes