New documents give insight into Luigi Mangione’s state of mind in the months leading up to the murder of UnitedHealthCare’s CEO

Diary entries written by Luigi Mangione reveal the now 27-year-old’s detailed thinking ahead of the alleged killing of UnitedHealthcare CEO Brian Thompson last year, a new court filing shows.

​ Diary entries written by Luigi Mangione reveal the now 27-year-old’s detailed thinking ahead of the alleged killing of UnitedHealthcare CEO Brian Thompson last year, a new court filing shows. Read More Breaking News, Latest News and Videos | CNN