Mangione Lawyers Push for State Case Dismissal

Attorneys for Luigi Mangione filed a motion on Friday seeking to dismiss the state court murder and weapons charges against their client. The legal team argues that his August guilty plea in federal court creates a double jeopardy barrier that prevents New York from trying him again for the killing of UnitedHealthcare CEO Brian Thompson.

Mangione, who admitted to shooting Thompson in December 2024, pleaded guilty in Manhattan federal court to charges of interstate stalking resulting in death and related offenses. That plea triggered a dispute over whether the state can still prosecute the separate second-degree murder and weapons possession case. A state trial originally scheduled for September 18 was postponed indefinitely while Judge Gregory Carro reviews the dismissal motion. A decision is expected on December 10.

The defense contends that the federal and state charges cover the same conduct and legal elements. In a letter to the court, lawyers Karen Friedman Agnifilo, Marc Agnifilo, and Jacob Kaplan stated that Mangione was charged by the federal grand jury with possessing the same firearm at the same time and place as the state charges. They wrote, 'There is and was no other gun.'

Manhattan District Attorney Alvin Bragg’s office maintains that the state case can proceed because the charges differ substantially from the federal ones. Prosecutors note that the federal case focused on stalking and using interstate facilities, while the state indictment is a traditional murder case. They argue that murder is generally not defined by federal statutes, allowing both prosecutions to stand.

Legal experts note that New York double jeopardy law requires distinct 'evils' between the two cases for the state matter to continue. Mangione’s lawyers argue the harms addressed in both proceedings are identical. Their recent submission stated, 'There is no basis to find such a difference, much less a sufficiently great difference as to fit within the narrow statutory exception.'

Bragg’s office previously pointed to a double jeopardy exception based on unique elements in the state case. Lead prosecutor Joel Seidemann argued that earlier federal litigation shows the charges are significantly different. U.S. District Judge Margaret Garnett had ruled that the stalking could not be considered violent, a decision that led to the dismissal of two counts that would have made Mangione eligible for the death penalty. The Justice Department had announced its intention to seek capital punishment before that ruling.

Mangione faces a potential life sentence when he returns to federal court on December 18 for sentencing. If the state case goes forward, he faces a maximum penalty of 25 years to life in prison. His attorneys have also suggested that the high profile of the case led to overprosecution by state and federal officials seeking credit for pursuing separate cases for the same event.

Mangione admitted to using a 3D-printed firearm to shoot Thompson outside the midtown Hilton on December 4, 2024. Thompson, a Minnesota father of two, was walking from his hotel to a company investor conference when he was ambushed. Mangione fled the scene, triggering an interstate manhunt that ended five days later when he was recognized at a McDonald’s in Altoona, Pennsylvania.