Pennsylvania governor says UnitedHealthcare CEO's killer "is no hero"

• He was giving the briefing after Luigi Mangione, a 26-year-old person of interest in Thompson's death, was arrested in Pennsylvania earlier Monday on unrelated charges.
• Prosecutors in New York later filed murder and other charges against Mangione late Monday.

Driving the news: "In America, we do not kill people in cold blood to resolve policy differences or express a viewpoint. I understand people have real frustration with our health care system, and I have worked to address that throughout my career," Shapiro said.

• "But I have no tolerance, nor should anyone, for one man using an illegal ghost gun to murder someone because he thinks his opinion matters most. In a civil society, we are all less safe when ideologues engage in vigilante justice," he added.
• "In some dark corners, this killer is being hailed as a hero. Hear me on this: he is no hero."

Zoom in: When asked about comparisons between reactions to Thompson's killing and the assassination attempt on President-elect Trump during a July campaign rally in Butler, Penn., Shapiro said: "Violence can never be used to address political differences or to address a substantive difference or to try to prove some sort of ideological point."

• He added: "That is not what we do in a civilized society. That was true in Butler, it was true in New York City, and it is true anywhere. That is not how you make progress in this country."

Go deeper: Who is Luigi Mangione, person of interest in UnitedHealthcare CEO shooting

Editor's note: This article has been updated to reflect N.Y. prosecutors' filing of charges against Luigi Mangione.