NEW YORK — Luigi Mangione's federal murder trial in the assassination of UnitedHealthcare CEO Brian Thompson has been moved back to make room for his state-level trial on related charges — a delay that had been expected.

The state trial is expected to begin on Sept. 8.

"We’ve been told that no requests for adjournment will be granted and to be ready on that day," defense attorney Karen Friedman Agnifilo told the court.

The federal trial was tentatively scheduled to begin in October and widely expected to be delayed due to the conflict in timing. Jury selection in the federal case has been pushed back to Jan. 5, 2027, with opening statements expected on Jan. 25.

Aside from the scheduling issue, the sides both agreed with the court's proposed jury questionnaire.

The proposal has not been made public and is not expected to be unveiled until after jury selection is complete to ensure fairness.

Garnett also set an Oct. 23 deadline for prosecutors to disclose their expert witness list and agreed to have to extra alternate jurors seated in the high-profile case. The federal trial is expected to run two to three weeks, she said. 

Mangione entered in a brown jail jumpsuit around 11:50 a.m., escorted into the courtroom by U.S. Marshals. His hands were behind him, uncuffed. They brought him through the door on the right side of the courtroom, opposite the defense table, so he had to walk in front of prosecutors before joining his lawyers. Judge Garnet kicked off the hearing around noon.

The sides had argued about specific questions in prior court filings over the past few months. Prosecutors filed a letter with the court in May listing their objections to some of the defense's proposed questions, calling some overly intrusive or duplicative.

Some things the defense is looking to learn about prospective jurors include their living situations, including whether they own or rent a home, their employment status, and if they have worked toward a goal as a part of a group, whether they have children and background information on their children, and details about their faith.

The defense also seeks to ask jurors about their background in the context of jails, firearms and law enforcement, the type of television shows they watch, and any prejudices with the criminal justice system.  The defense wants to know if a juror regularly stays at the Hilton on 6th Avenue, the scene of the crime — and whether the potential juror works for or holds stock in UnitedHealthcare.

Last week, reports citing anonymous sources claimed that Mangione's attorneys and federal prosecutors were having discussions about a plea deal but were unable to come to an agreement. 

In a statement to Fox, Mangione lawyer Karen Friedman Agnifilo called information attributed to anonymous sources, "a troubling, deliberate pattern by prosecutors and law enforcement to prejudice Luigi." A spokesperson for the U.S. Attorney for the Southern District of New York declined to comment on the reported plea negotiations.

Separately, Mangione's lawyers floated and then withdrew a potential psychiatric defense in the state case.

They sent a one-sentence letter to the court, telling Judge Gregory Carro that they were withdrawing a notice made public just a day earlier that signaled plans to pursue an extreme emotional disturbance defense in his state case.

The move would have required Mangione to concede that he shot Thompson, a father of two, at his state trial. If he were later convicted under New York's extreme emotional disturbance law, the murder charge would be reduced to manslaughter, and the potential sentence would be reduced from 25 years to life in prison to five to 25 years.

With his federal trial not scheduled to begin until early next year, it's unclear how such a defense in the state case would have impacted that one. The federal case carries stiffer potential sentences, and there is no federal equivalent to New York's emotional disturbance law.

Mangione is accused of plotting the murder, traveling across state lines to New York City ahead of a UnitedHealthcare business conference and shooting Thompson in the back outside the venue.

Prosecutors have alleged he had used a fake name to check into a Manhattan hostel and then fled to Altoona, Pennsylvania, where police arrested him at a McDonald's restaurant.