A red notebook left behind by Luigi Mangione exposes the chilling rationale behind the murder of UnitedHealthcare’s CEO.

UnitedHealthcare is suing The Guardian for defamation over a report the British outlet published about the health insurance ...

Mangione’s “intentions were obvious from his acts, but his writings serve to make those intentions explicit,” prosecutors said in Wednesday’s filing.

UnitedHealthcare sued The Guardian on Wednesday for defamation, claiming the British daily ran information it knew to be ...

Diary entries from Luigi Mangione, the man charged in the death of former United Healthcare CEO Brian Thompson, are public.

Luigi Mangione revealed he wanted to kill Thompson to “prove a political point about the health insurance industry.” ...

Californians can place a measure on next year’s ballot inspired by alleged UnitedHealthcare CEO killer Luigi Mangione.

Prosecutors say Luigi Mangione, who allegedly murdered United Health Care CEO Brian Thompson, wrote about the crime ahead of carrying it out.

Prosecutors in New York unveiled portions of the alleged diary of Luigi Mangione, the suspect accused of killing UnitedHealthcare CEO Brian Thompson.

Prosecutors reveal alleged notes by Luigi Mangione outlining his motive for the fatal shooting of UnitedHealthcare CEO Brian ...

New York prosecutors are also opposing Mr. Mangione’s efforts to get the terrorist charges against him dismissed.