Prosecutors warn Luigi Mangione supporters may intimidate witnesses and jurors at murder trial

New York City prosecutors are informing that the defendant's supporters whitethorn intimidate witnesses and jurors successful the proceedings of accused assassin Luigi Mangione, who is charged with gunning down UnitedHealthcare CEO Brian Thompson successful a Dec. 4, 2024 shooting from down extracurricular a Manhattan hotel.

"The media attraction surrounding this lawsuit — and the efforts of immoderate of defendant’s supporters some to intimidate witnesses and to interfere with the functioning of the assemblage — volition spot bonzer unit connected witnesses and imaginable jurors alike," Assistant District Attorney Joel Seidemann wrote successful a missive to Judge Gregory Carro Monday evening.

Prosecutors are asking the justice to bounds courtroom entree and strictly enforce decorum rules astatine the high-profile trial, scheduled to statesman adjacent month.

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Luigi Mangione successful Court astatine 100 Centre Street successful Manhattan for a pretrial grounds hearing, Thursday, December 11th, 2025. (William Farrington for New York Post via Pool)

They besides claimed that tribunal officers would look trouble enforcing courthouse rules successful an overflow country if 1 were made disposable to accommodate much reporters than tin acceptable successful the main courtroom.

"We are peculiarly acrophobic astir the anticipation that a spectator successful an overflow courtroom volition clandestinely grounds the proceedings and stock immoderate specified recordings with others," prosecutors wrote. "That interest volition lone beryllium heightened if the overflow country includes a video provender arsenic good arsenic an audio feed."

Seidemann recommended that if the justice does o.k. an overflow room, "it see lone an audio provender truthful arsenic to minimize the imaginable for witnesser intimidation and harassment."

Read the prosecution letter:

"The accepted contented is that the defence usually doesn't privation high-profile cases broadcast. It tin enactment implicit unit connected jurors to instrumentality a guilty verdict," Neama Rahmani, a erstwhile national prosecutor, told Fox News Digital past week.

But Mangione's defence squad is apt alert that the suspect has a sizable fig of supporters and is aiming to leverage that, helium said.

"There's upwards of 10 to 20 percent of the radical who person been surveyed who judge that adjacent if helium did it, it was justified," Rahmani said. "And I deliberation the defence knows this, and they cognize that much attraction creates the anticipation of assemblage nullification, oregon possibly adjacent an acquittal."

This 2017 record photograph of Brian Thompson was released via Businesswire erstwhile helium was named Chief Executive Officer of UnitedHealthcare Unit successful 2017. (Businesswire)

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Thompson, a 50-year-old begetter of 2 from Minnesota, was walking to a concern league erstwhile surveillance video shows a antheral firing aggregate bullets into his back. Police arrested Mangione days aboriginal astatine a McDonald's successful Altoona, Pennsylvania.

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He was owed successful tribunal Tuesday for a league up of his trial, which is acceptable to statesman adjacent period earlier Judge Carro.

Luigi Mangioni is escorted from an NYPD chopper successful New York City, NY, Thursday, December, 19, 2024. Mangione is the premier fishy successful the execution of United Healthcare CEO, Brian Thompson. (Rashid Umar Abbasi for Fox News Digital)

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Mangione's ineligible squad has requested a publically televised trial, thing that New York instrumentality doesn't typically allow.

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In June, Mangione's defence squad announced plans to asseverate a psychiatric defence successful the authorities lawsuit — past withdrew it a dat later.

Mangione has pleaded not blameworthy to 8 authorities charges, including second-degree murder, which carries a maximum condemnation of 25 years to beingness successful situation nether New York law.

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He is expected to spell to proceedings successful a parallel national lawsuit aboriginal adjacent year.

Fox News' Adam Sabes contributed to this report.