A gun, a notebook, and Luigi Mangione’s alleged statements: Breaking down a key ruling in his murder trial

Crucial evidence will be admitted in Luigi Mangione’s New York state case, paving the way for a strong prosecution, experts say, and raising questions about his defense.

​ Crucial evidence will be admitted in Luigi Mangione’s New York state case, paving the way for a strong prosecution, experts say, and raising questions about his defense. Read More Breaking News, Latest News and Videos | CNN