Luigi Mangione Pleads Guilty to Stalking Charges in Healthcare CEO Slaying

Luigi Mangione pleaded guilty during a hearing Friday to federal stalking charges in the killing of UnitedHealthcare CEO Brian Thompson, confessing to the high-profile slaying for the first time.

Mangione, 28, is accused of ambushing Thompson and shooting him outside a Manhattan hotel on December 4, 2024.

"On the morning of Dec. 4, 2024, I shot Mr. Thompson in Manhattan, and he died," Mangione told the court.

"Mangione was prepared to plead guilty just moments before he spoke," defense attorney Karen Friedman Agnifilo told Judge Margaret Garnett. As Mangione addressed the judge, Thompson's widow Paulette, joined by Thompson's mother, "repeatedly wiped tears from her face." On the life-sentence warning: "He responded 'yes' when Garnett asked whether he understood that he could spend the rest of his life in prison."

In the federal case, Mangione faces two charges: interstate stalking resulting in death and stalking through use of interstate facilities resulting in death. Each charge carries a maximum sentence of life in prison. The federal complaint alleges he traveled across state lines to stalk and kill Thompson and that he used means such as a cellphone, the internet, interstate highways while planning and carrying out the attack. A federal judge in January dismissed two other federal counts, including murder through use of a firearm, that had carried the possibility of the death penalty. Separately, Mangione is facing state charges, including second-degree murder and firearms offenses. A judge last year threw out terrorism charges in the state case.

A guilty plea to one or both charges in the federal case means Mangione admits legal responsibility for the offense and would mean he avoids a federal trial on that charge or charges and shift the case to sentencing. It could come as part of a plea agreement negotiated with prosecutors or it could happen without a deal in place. A plea agreement typically involves some form of understanding between prosecutors and the defense, and could come with a sentencing recommendation agreed by both parties. But it would not automatically guarantee a shorter sentence since a judge would still have to accept the plea and decide the punishment.

If Mangione pleads guilty in the federal case, his attorneys would likely seek the dismissal of the state case under New York's double jeopardy law. The state's law protects people from being prosecuted twice for the same conduct. It can be triggered if a jury has been sworn in a prior prosecution or if a prior prosecution ends in a guilty plea. But state prosecutors would certainly oppose the move and have argued that their case is distinct. A judge would have to decide whether the state case can proceed.

In a letter last month, state prosecutors objected to the possibility of a guilty plea in the federal case ending the state case. Assistant District Attorney Joel Seidemann wrote in a July 2 letter that Manhattan District Attorney Alvin Bragg's office would object if a guilty plea in the federal case "would operate to defeat a just outcome in the state prosecution." "Any guilty pleas in these matters must account for the seriousness of defendant's offenses, the loss of an innocent life, the impact of those crimes on the victim's family, and the other state interests that are implicated, including the sanctity of life principle that underpins the state homicide charges," Seidemann wrote.

If convicted, Mangione would face the maximum penalties available. Under the terms of a plea agreement, prosecutors and defense lawyers could advocate for a specific sentence or range, although the court would still play a central role in deciding the penalty. If the state case proceeds to trial, Mangione could still face a sentence of life imprisonment if convicted on the second-degree murder charge. That charge carries a penalty of 25 years to life in prison.

Manhattan prosecutors indicated they intend to proceed as scheduled on September 8 before Justice Gregory Carro. The Manhattan DA's office said it "has been tirelessly preparing to pursue a trial conviction" for "the alleged cold-blooded murder of Brian Thompson," adding: "We are encouraged that Mr. Thompson's family received a measure of accountability today."

Mangione faces the potential of life imprisonment following Friday's guilty plea. Prosecutors and defense lawyers will advocate for a specific sentence, although a judge will determine his fate. Former federal prosecutor Neama Rahmani said: "The stalking charges in federal court carry a potential life sentence." But "Mangione's guideline range under the United States Sentencing Guidelines is closer to 25-30 years." If "the federal judge sentences Mangione to something close to that range" and "he avoids state murder charges because of New York's double jeopardy law," then "that would be a great result for the defense." If the state case proceeds, "Mangione could still face a sentence of life imprisonment if convicted on the second-degree murder charge. That charge carries a penalty of 25 years to life in prison."

NYPD Commissioner Jessica Tisch told reporters the hearing marked an "important moment of accountability" and addressed "those who idolize" the confessed killer. Her words: "Violence is not a cause. Murder is not a message and a killer is certainly not a hero."