"Today, Luigi Mangione admitted to stalking and murdering Brian Thompson on a Manhattan street in broad daylight," said U.S. Attorney Jamie McDonald. "No grievance, political belief, or ideological cause can justify murder. With today's guilty plea, Mangione is being held accountable for a heinous crime that claimed an innocent life and drew national attention. I commend the FBI, the NYPD, our law enforcement partners, and the dedicated prosecutors of this Office for their tireless work in securing this result."