Manhattan prosecutors are fighting to keep Luigi Mangione’s state murder case alive after his federal plea, arguing stalking and murder are different crimes that demand separate accountability.
The Manhattan district attorney’s office argued in a new court filing Friday that Luigi Mangione should still be tried in state court and opposed his bid to dismiss the state indictment, ABC News reported.
Prosecutors say a state trial would hold him to account for a different kind of “harm or evil” than the guilty plea he already entered in federal court. Mangione’s defense wants the New York case thrown out under the state’s double jeopardy rules on successive prosecutions. A judge is expected to decide the fight in December.
The state indictment charges Mangione with murdering UnitedHealthcare chief executive Brian Thompson in December 2024. In August, he pleaded guilty in federal court to traveling to New York with the intent to shoot Thompson and to both federal stalking counts. U.S. District Judge Margaret Garnett accepted that plea.
As part of the federal case, Mangione admitted the shooting in plain terms.
"On the morning of December 4, 2024, I shot Mr. Thompson in Manhattan and he died."
The district attorney’s office says that admission is not enough to block a state murder trial. Stalking and murder, prosecutors argue, are two different crimes. The federal plea, in their view, does not wipe out New York’s authority to try him for the homicide itself.
That stance matters because Mangione has already pleaded guilty to federal stalking charges tied to the same killing. He still faces a maximum federal sentence of life in prison, with sentencing also set for December.
In the state case, he pleaded not guilty. He had been set to go on trial on second-degree murder, second-degree criminal possession of a forged instrument, and multiple other charges. The defense motion aims to stop that trial before it starts.
Defense attorney Karen Friedman Agnifilo put the double jeopardy claim in blunt terms when she spoke to reporters in August.
"New York law does not permit a person to be prosecuted and punished twice for the exact same crime under a statute that governs successive prosecutions."
Prosecutors reject the premise that the federal stalking conviction and the state murder charge are “the exact same crime.” Their filing frames the state case as unfinished business over the killing of Thompson, not a rerun of the federal stalking counts.
The calendar is tightening on both tracks. A state judge is expected to rule in December on whether the New York trial goes forward. The same month, Mangione is scheduled for federal sentencing.
He appeared earlier for a pre-trial hearing at Manhattan Criminal Court in New York City on June 17, 2026. The state case did not vanish after the federal plea. It moved into this dismissal fight instead.
Readers following the charge structure know the second-degree murder charge under New York law sits at the center of what state prosecutors want to keep alive. The DA’s office is not treating the federal stalking plea as a substitute for that homicide case.
Thompson was the chief executive of UnitedHealthcare. The state indictment ties Mangione to his killing in Manhattan in December 2024. Mangione’s own federal admission places the shooting on the morning of December 4, 2024, and states that Thompson died.
The defense theory is straightforward on paper. New York has a statute on successive prosecutions. Agnifilo’s August statement cast the state case as a second punishment for the same crime after the federal plea. The motion to dismiss rests on that reading of state law.
Prosecutors answer with a different sorting of the offenses. Federal stalking, they say, is not New York murder. One plea does not retire the other charge. The “harm or evil” language in the DA’s filing is meant to mark that gap: the state wants a verdict on the killing, not another label for the stalking conduct already admitted in federal court.
How the federal track reached a plea has been a long-running thread, including periods when Mangione was expected to plead guilty in the federal case linked to Thompson’s death. The August plea and Judge Garnett’s acceptance closed that chapter. The state indictment did not close with it.
Nor is the defense limited to paperwork on double jeopardy. Separate coverage has examined other tactics in the same prosecution, including when Mangione’s defense pushed for cameras in the courtroom. The dismissal motion is the direct threat to a state murder trial. The DA’s Friday filing is the direct answer.
No ruling has been issued yet. The dispute on the page is clear: defense says successive prosecution of the same crime is barred; prosecutors say stalking and murder are different crimes and the state trial should proceed. The court has not chosen between those positions in the reporting to date.
Full docket numbers, the complete text of the DA’s filing, and the name of the state judge set to rule were not detailed in the account of the Friday papers. The operative public points are the opposition to dismissal, the “harm or evil” framing, the claim that the federal admission does not preclude a state murder trial, and the December timing for both the state decision and federal sentencing.
Mangione’s federal plea included traveling to New York with the intent to shoot Thompson and both stalking counts. His state posture remains a not-guilty plea on the murder case and the related charges, unless and until a judge ends that case on double jeopardy grounds.
For victims’ families and for the public, the practical stakes are simple. A federal stalking conviction and a possible life sentence still leave the New York murder count unresolved unless the dismissal motion succeeds. Manhattan prosecutors say that count belongs in front of a state jury.
Admitting a killing in federal court is not the same as answering a state murder charge. If New York still has a homicide case to try, it should try it, without letting a stalking plea double as a free pass on the murder itself.
