The high-profile state murder trial of Luigi Mangione, the man accused of fatally shooting UnitedHealthcare Chief Executive Officer Brian Thompson, has been delayed after the defendant entered guilty pleas to federal charges connected to the killing late last week.
Mangione, 26, pleaded guilty last Friday to two federal counts of criminal stalking in connection with the December 2024 killing of Thompson, openly admitting he carried out the fatal attack on the healthcare executive. Within hours of entering those guilty pleas, Mangione’s defense team moved to dismiss the pending state murder charges entirely, arguing that a second prosecution on identical conduct violates longstanding double jeopardy protections under New York state law.
On Monday, Judge Gregory Carro, presiding over the Manhattan state court proceedings, granted the trial delay and set a firm deadline for the Manhattan District Attorney’s office to file its formal response opposing Mangione’s dismissal bid by October 9. Jury selection for the state trial was originally scheduled to kick off on September 8, but that timeline has been scrapped entirely. The next scheduled court hearing in the case is now set for December 10.
The case has drawn widespread national attention, both because of the high status of the victim and the intense legal debate over how double jeopardy protections apply to successive state and federal prosecutions for the same criminal act. Legal observers have noted that while dual sovereignty doctrine generally allows state and federal prosecutions for the same offense, Mangione’s legal team is leaning on specific provisions of New York state law that bar successive prosecutions for the same conduct to push for the dismissal.