Luigi Mangione, charged with 2nd degree murder of UnitedHealthcare CEO Brian Thompson

After UnitedHealthcare’s CEO was gunned down on a New York sidewalk, police searched for the masked gunman with dogs, drones and the city’s extensive surveillance system. Investigators analyzed DNA samples, fingerprints and internet addresses. Police went door to door looking for witnesses. When an arrest came five days later, those sprawling investigative efforts shared credit with an alert civilian’s instincts. A customer at a McDonald’s restaurant in Pennsylvania noticed another diner who resembled the man in the oblique security-camera photos that New York police had publicized. Luigi Nicholas Mangione, a 26-year-old Ivy League graduate from a prominent Maryland real estate family, was arrested Monday in the killing of Brian Thompson, who headed one of the United States’ largest medical insurance companies.