Luigi Mangione admitted in federal court on Friday to the 2024 fatal shooting of UnitedHealthcare CEO Brian Thompson. Mangione, 28, pleaded guilty to two federal charges of stalking with the intent to kill, confirming that he shot Thompson in Manhattan. The plea avoids a federal trial for the killing, which occurred outside a New York hotel during an investor conference.
The shooting took place on December 4, 2024, prompting a five-day manhunt that ended with Mangione's arrest in Pennsylvania. Investigators reported that Thompson, 50, led the insurance unit of UnitedHealth Group at the time of his death. Mangione, who had previously pleaded not guilty to federal charges in April 2025, made his courtroom admission while reading from a statement that referenced his own experiences with the health insurance system following a back injury.
During the proceedings, Mangione described using a 3-D printer to manufacture part of a firearm and traveling to New York specifically to target Thompson. He stated he had successfully gathered information about the company's investor conference by posing as an investor managing $50 billion in assets. Federal prosecutors, led by Manhattan U.S. Attorney Jamie McDonald, stated they had made no concessions in exchange for the plea and will seek the maximum sentence of life in prison.
The admission also triggers a significant legal challenge regarding New York’s double jeopardy laws. Mangione’s defense team has already filed a motion to dismiss separate state-level charges, including murder and weapons possession, arguing that their client cannot be punished twice for the same underlying conduct. If successful, this could cancel the state trial currently scheduled for September 8. However, the Manhattan District Attorney’s office, led by Alvin Bragg, has indicated it will contest this motion, setting up a high-stakes court battle over whether the state's interest in a second-degree murder conviction—which carries a sentence of 25 years to life—can proceed alongside the federal stalking conviction.
For the broader public and the legal community, this case sets a precedent for how federal stalking statutes are utilized in high-profile homicides, especially after federal murder charges were dismissed in January 2026 due to legal technicalities. The outcome will determine which jurisdiction ultimately holds Mangione and how the U.S. court system balances federal charges with state-level homicide prosecutions. The next immediate steps include the litigation of the defense's motion to dismiss the state case and the final federal sentencing scheduled for mid-December.