In this courtroom sketch, Luigi Mangione, center, stands between his attorneys, Karen Friedman Agnifilo, left, and Marc Agnifilo, right, as he is sworn in before pleading guilty to federal stalking charges in the killing of UnitedHealthcare CEO Brian Thompson, Friday, Aug. 14, 2026, in New York.
Luigi Mangione’s guilty plea to federal stalking-to-kill charges has raised questions about how it’ll affect his state murder case and what his lawyers might do to prevent Mangione from spending the rest of his life in prison. In a stunning turn, Mangione pleaded guilty in Manhattan federal court on Friday to a pair of stalking charges and admitted he killed UnitedHealthcare CEO Brian Thompson. Neither Mangione nor his lawyers said why he pleaded guilty and why he decided to do so now, but they gave some clues. Mangione’s lawyers have filed paperwork seeking to have the state case thrown out on double jeopardy grounds.