The gun found on the suspect in the killing of United Healthcare’s CEO matched shell casings found at the site of the shooting, New York City’s police commissioner said Wednesday. Suspect Luigi Mangione’s fingerprints also matched a water bottle and a protein bar wrapper that police found near the scene and say the gunman purchased at a nearby coffee shop while awaiting his target, Commissioner Jessica Tisch said at an unrelated news conference. The 26-year-old Mangione’s was charged with murder in the shooting last week in midtown Manhattan of Brian Thompson, who led the United States’ largest medical insurance company. Authorities have said that writings found in Mangione's possession hinted at a hatred of corporate greed. They’ve recovered a spiral notebook that Mangione kept, along with a three-page handwritten letter found when he was arrested, a law enforcement official said Wednesday. Police have not disclosed what was in the notebook. MORE: https://www.wtsp.com/article/news/nation-world/unitedhealthcare-ceo-murder-suspect-fights-extradition/507-0a6c5b34-961f-4354-a905-e70dbab76ad7