Luigi Mangione admitted to fatally shooting UnitedHealthcare CEO Brian Thompson as he pleaded guilty to two federal stalking charges. The 28-year-old acknowledged during a Manhattan court hearing on Friday that he targeted Thompson outside a New York City hotel on December 4, 2024. Mangione’s unexpected plea removes the need for a federal trial but has triggered a new legal battle over whether New York prosecutors may continue pursuing their separate murder case against him.
Mangione directly admitted responsibility for Thompson’s death while addressing U.S. District Judge Margaret Garnett. “I shot Mr Thompson, and he died,” Mangione told the judge. “I understood that my actions would place him in fear of death of bodily injury. I knew what I was doing was illegal.”
He pleaded guilty to one count of interstate stalking resulting in death and one count of stalking through the use of interstate facilities resulting in death.
During his account of the crime, Mangione said he learned about UnitedHealthcare’s investor conference after enduring years of pain from a broken back. He said he traveled to Manhattan, contacted the company while posing as an investor managing $58 billion, and received information about the conference’s location within an hour. Mangione also admitted to producing a gun using a 3-D printer.
Federal murder and firearms charges against Mangione were dismissed in January after Garnett ruled that the stalking counts did not legally qualify as crimes of violence under the relevant federal law. That decision took the death penalty off the table. CBS confirmed Friday’s guilty plea.
Brian Thompson’s Family Calls Plea A ‘Step Toward Justice’
5Members of Thompson’s family reportedly came face-to-face with Mangione for the first time during the hearing. Afterward, the family issued a statement welcoming his admission while urging the court to impose a sentence reflecting the seriousness of the crime.
“Today’s guilty plea marks an important step toward justice for Brian and for our family. While nothing will ease the pain of losing him, we are grateful that the federal justice system has held the person responsible for this heinous act accountable,” the family said.
“Now we look to the court to ensure that sentencing reflects the severity of this crime,” they added. “We remain mindful that additional proceedings in New York and Pennsylvania are still to come, and we will continue to seek the justice Brian deserves.”
Federal prosecutors similarly emphasized that public attention surrounding Mangione should not overshadow the killing. “There can be no celebrity in assassination. Mangione attempted to send a public message through violence, but the message that emerges today is very different,” U.S. Attorney Jamie McDonald said outside the courthouse.
Luigi Mangione Could Receive Life In Federal Prison
5Each of the two stalking charges carries a maximum sentence of life in prison. Mangione’s sentencing hearing has been scheduled for December 18.
According to the judge, a letter addressing sentencing calculations suggests an advisory guideline starting at 292 months, or more than 24 years. However, there is no formal plea agreement requiring prosecutors to recommend a reduced sentence. Federal prosecutors said after the hearing that they intend to seek the maximum punishment.
The final sentence will be determined by Garnett after considering the federal sentencing guidelines and other factors.
Defense Moves To Dismiss New York Murder Case
5Mangione still faces a separate state prosecution that includes a second-degree murder charge, weapons offenses and possession of a forged instrument. Immediately after his federal hearing, his attorneys moved to dismiss the state case on double-jeopardy grounds.
“Today is a solemn and significant day. With today’s guilty plea, Mr. Mangione has accepted full responsibility for the death of Brian Thompson arising from the events of December 4, 2024, outside of the UnitedHealthcare investor conference here in Midtown Manhattan. It was a single, tragic event. Yet he’s being prosecuted twice for the same conduct,” defense attorney Karen Friedman Agnifilo said.
“Mr. Mangione has been unfairly treated since the outset in every way and has successfully fought off terrorism charges and the death penalty, while also fighting – at the same time – two simultaneous prosecutions in two jurisdictions, who are trying to punish him twice for the exact conduct,” she said. “He’s been treated differently from every other defendant charged with this offense in New York.”
Federal and state governments can ordinarily prosecute the same conduct because they are separate sovereigns. New York law, however, provides additional protections that can restrict a state prosecution after the same conduct results in a guilty plea or trial resolution elsewhere.
A judge must now decide whether those protections apply to Mangione’s case.
Expert Speculates Plea Was Intended To Avoid State Prison
5Retired FBI Special Agent James Gagliano suggested that Mangione’s attorneys may prefer for him to serve his sentence in the federal prison system instead of a New York state facility.
“What is confounding to all of us is why the Southern District would be doing this without working with the state because the only thing that can be the possible outcome here is that Luigi Mangione’s attorneys are trying to get him to the comfy confines of FCI Otisville and avoid Sing Sing, Attica, Clinton or places like that in the state system,” Gagliano told Fox News. “They will file a motion to dismiss based on double jeopardy, so there won’t be a trial on September 8th.”
Gagliano’s remarks represent his interpretation of the defense strategy. The state case has not yet been dismissed, and its future remains subject to a judge’s ruling.
Mangione was arrested at a McDonald’s in Altoona, Pennsylvania, five days after Thompson was shot. His federal admission has resolved one prosecution, but the fight over whether he must also face a New York jury is only beginning.