Luigi Mangione pleads guilty to federal stalking charges in striking reversal: 'I shot Brian Thompson'

Luigi Mangione in an earlier appearance in state court, ahead of a scheduled murder trial. The Ivy League graduate pleaded guilty to separate stalking charges in federal court. David Dee Delgado-Pool/Getty Images Luigi Mangione pleaded guilty to stalking charges in federal court in a striking reversal of a previous not guilty plea. A judge will sentence him on December 18. The federal charges carry a possibility of life in prison. The plea throws a wrench into a separate murder case from New…