Luigi Mangione’s defense slams plea deal reports, drops emotional distress claim
Attorneys for Luigi Mangione, the man accused of killing a chief executive, are pushing back against reports that he may be exploring a plea agreement with federal prosecutors. The defense argues the claims are part of a broader effort to shape public perception and undermine Mangione’s right to a fair trial. In a separate development in his state murder case, his legal team has dropped an emotional distress argument that could have supported reducing the charge from murder to manslaughter.
Manhattan prosecutors are preparing to challenge any potential federal plea deal for Luigi Mangione if they believe it could disrupt New York’s murder case in the killing of UnitedHealthcare CEO Brian Thompson.
In a newly unsealed letter reviewed by INC News, the Manhattan District Attorney’s Office said it is aware of reports suggesting Mangione could attempt to plead guilty in his federal case before his state trial gets underway.
Prosecutors cautioned that if a federal agreement risked interfering with the New York prosecution, they may ask the federal judge to weigh that impact before deciding whether to approve the plea.
The letter comes after a June federal court hearing in which U.S. District Judge Margaret Garnett postponed Mangione’s federal trial until January 2027, effectively allowing the New York murder trial to proceed first.
Luigi Mangione appears at an evidence suppression hearing at Manhattan Supreme Court in New York City on May 18, 2026. (Steven Hirsch/New York Post via Pool)
Mangione, 28, has entered not guilty pleas in both the state and federal cases tied to Thompson’s December 2024 death. Thompson was shot outside a Manhattan hotel while on his way to a conference.
“If a proposed federal guilty plea would operate to defeat a just outcome in the state prosecution, the People could advise the federal district court of that consequence, and the court should consider that fact in deciding whether to accept the plea,” Assistant District Attorney Joel Seidemann wrote in the July 2 letter.
Prosecutors added that the court should also consider any opposition from Thompson’s family before accepting such a plea.
The letter marks the clearest sign yet that Manhattan prosecutors are prepared to push back against any deal they believe could keep the state’s high-profile murder case from ever reaching a jury.
The DA’s office said it has already shared its position with federal prosecutors and Mangione’s defense team.
Luigi Mangione in Court at 100 Centre Street in Manhattan for a pretrial evidence hearing, Thursday, December 11th, 2025. (William Farrington for New York Post via Pool)
Prosecutors argued that any resolution should reflect “the seriousness of defendant’s offenses,” “the loss of an innocent life,” the impact on Thompson’s family and New York’s interest in prosecuting the homicide.
The dispute comes after reports surfaced in June that Mangione’s legal team and federal prosecutors had discussed a possible plea deal but failed to reach an agreement.
Mangione attorney Karen Friedman Agnifilo blasted information attributed to anonymous sources at the time as “a troubling, deliberate pattern by prosecutors and law enforcement to prejudice Luigi.”
A spokesperson for the U.S. Attorney’s Office for the Southern District of New York previously declined to comment on the reported negotiations.
At a June 29 hearing, Garnett delayed Mangione’s federal trial after concluding there was no practical way for his attorneys to prepare for two high-profile trials at the same time.
During that hearing, Agnifilo confirmed Mangione’s New York murder trial remained on track to begin Sept. 8 and said the defense had been told there would be no delays.
“We’ve been told that no requests for adjournments will be granted and to be ready on that date,” Agnifilo told the court.
The judge said there was simply no realistic way to move both cases forward at once.
“It’s simply impossible for us to be moving through the jury selection process in this case while the defendant and his counsel are fully occupied actually conducting the state trial,” the judge said. She rescheduled federal jury selection for Jan. 5, 2027, with opening statements set for Jan. 25.
Luigi Mangione appears at an evidence suppression hearing at the Manhattan Supreme Court in New York City, May 18, 2026. (Jeenah Moon/Reuters via Pool)
Under the revised schedule, about 800 prospective jurors will complete written questionnaires in early December before in-person jury selection begins.
Manhattan prosecutors also argued New York should get the first opportunity to try Mangione because he was extradited there on the state case before he was later transferred into federal custody. Prosecutors argued that the transfer did not change New York’s priority to prosecute him first.
Prosecutors allege Mangione fled the city and was arrested five days later at a McDonald’s in Altoona, Pennsylvania.
