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Luigi Mangione’s much anticipated state and federal trials stemming from the killing of a top healthcare executive on a Manhattan street were both postponed on Wednesday.

Mangione’s state trial was moved from 8 June to September, the judge in that case said in an order made public this afternoon.

Hours earlier, the judge overseeing Mangione’s federal case, Margaret Garnett, tentatively postponed that proceeding to 5 October.

Garnett’s scheduling decision on Wednesday came after Mangione’s team requested a postponement of this trial, which had been scheduled for 8 September.

Mangione’s request relates to his New York state-level case in the killing of the UnitedHealthcare CEO, Brian Thompson. The accused murderer’s Manhattan supreme court trial is expected to span four to six weeks.

Garnett said in-person questioning of prospective jurors would start on 5 October, with the trial beginning in earnest with openings and testimony on 26 October or 2 November.

Thompson’s 4 December 2024 killing spurred a sprawling manhunt for his shooter. The executive’s death also intensified public outcry over the for-profit US healthcare industry while elevating Mangione to folk hero status among a strong contingent of devotees.

About two dozen Mangione fans made an appearance at court. As with earlier proceedings, several wore variations of green, such as sea-foam and olive – a reference to the Nintendo character, Luigi, who wears green.

When Mangione walked into court just before 11.30 am, donning khaki jail scrubs and a long-sleeved white under-shirt, some supporters stretched to catch a glimpse of him. Two supporters who confusingly secured city-issued press credentials sat on the media side of the gallery.

Mangione remained alert throughout the proceeding. Sometimes, he touched his mouth or leaned toward his lawyer.

In pushing for postponement, Mangione’s attorneys said in an 18 March letter to Garnett: “Mr Mangione is now in the position of needing to prepare for two complicated and serious trials at the same time … This scenario violates several of Mr Mangione’s constitutional rights.”

They argued that Mangione “has a right to meaningfully participate in all stages of his trial, including the jury selection process”. The federal court was expected to distribute questionnaires for potential jurors on 29 June.

This put Mangione in the “impossible position” of having to examine 800 jury questionnaires the week of 29 June – during his state trial for second-degree murder. “As a practical matter, this would not be possible,” they said.

During trial days, they said in court papers, Mangione would be brought to court and returned to federal jail that evening. When he gets back to jail, it would be too late for his lawyers to meet with him about the questionnaires.

Additionally, if prospective federal jurors started completing questionnaires in late June, they would be exposed simultaneously to his state trial proceedings.

“Mr Mangione’s potential federal jurors will be constantly bombarded with news reports and social media posts relating to the allegations and evidence against Mr Mangione as they fill out juror questionnaires and in the subsequent weeks before they are empaneled in the federal case,” they also wrote.

Mangione’s team noted that Justice Gregory Carro, who is overseeing the state case, said he would reschedule this trial for 8 September if federal proceedings were pushed back.

“I don’t think what we’re asking for is unreasonable,” Mangione’s lead attorney, Karen Friedman Agnifilo, said in court.

Prosecutors opposed this postponement proposal, maintaining there were workarounds other than a delay that would give Mangione and his team enough time.

“The concerns identified by the defense can be fully addressed through targeted modifications to the questionnaire process, rather than a wholesale continuance of the trial date in this case,” the prosecutors argued in a 21 March letter.

They noted that the reasoning behind distributing juror questionnaires in June related to Mangione originally facing a federal capital case. Garnett dismissed death penalty-eligible charges on 30 January.

In court, prosecutor Dominic Gentile reiterated similar arguments and said the government would be prejudiced by a delay.

“The public has a right to a speedy trial as well, especially in a case as significant as this,” Gentile said. “Your honor need only look out the window to see the people who follow this defendant and believe that he what he did was right.”

Garnett said during this morning’s half hour-long proceeding that questionnaires for prospective jurors would be distributed the week of 8 September, if court administrators could accommodate this change. Garnett agreed that distributing questionnaires – which are meant to identify possible juror bias – during Mangione’s state trial would obviate their usefulness.

“There’s really no way around taking into account the events in the state case involving the same defendant,” she said. “What is happening at 100 Centre [street courthouse] inevitably affects the way we structure things here.”

  • This article was amended on 1 April 2026. Brian Thompson was killed in 2024, not 2025, as an earlier version said.