Judge Deals Mixed Blow In Mangione Murder Case As Key Evidence Survives Suppression Fight

A New York judge handed both sides a mixed ruling Monday in the murder case against Luigi Mangione, suppressing some evidence gathered during his arrest while allowing prosecutors to keep what may be the most damaging items: a gun and a notebook allegedly tied to the killing of UnitedHealthcare CEO Brian Thompson.

Judge Gregory Carro ruled that police improperly searched Mangione’s backpack without a warrant shortly after his arrest at a McDonald’s in Altoona, Pennsylvania, in December 2024. Because of that, several items recovered during the initial search will not be allowed at trial, including a cellphone, passport, wallet, computer chip, and a loaded handgun magazine.

However, the judge stopped short of throwing out all evidence tied to the backpack. Carro determined that a later search conducted at the police station qualified as a lawful “inventory search,” meaning prosecutors can still present a 3D-printed handgun authorities say was used in the shooting, along with a red notebook that investigators describe as a manifesto outlining Mangione’s alleged motives and plans.

The ruling is viewed as a partial win for Mangione’s defense team, which had argued police violated his constitutional rights during the chaotic arrest following a nationwide manhunt. Attorneys claimed officers searched the backpack before obtaining a warrant and delayed reading Mangione his Miranda rights while questioning him inside the restaurant.

Carro agreed in part.

🚨 🚨 THE JUDGE JUST HANDED LUIGI MANGIONE A LEGAL WEAPON WORTH MORE THAN THE GUN THEY FOUND

The prosecution built their premeditation case around what was in that backpack.

A loaded magazine. A passport. A cellphone. A wallet. A computer chip.

Items that show a man who… pic.twitter.com/aoEfQL4Kqu

— 🇺🇸 Thomas A. Whitaker (@WhitakerTA_) May 18, 2026

“The search of the backpack at the McDonald’s was an improper warrantless search,” the judge said while summarizing the ruling from the bench.

According to the court decision, police argued they searched the backpack immediately out of concern it could contain explosives or pose a threat to officers and the public. Carro rejected that justification, writing that prosecutors failed to prove there were urgent circumstances allowing a warrantless search.

Still, the judge said the subsequent station-house inventory process was legally sound. That distinction preserved some of the prosecution’s strongest evidence heading into trial. Investigators allege the notebook contains writings describing intentions to target a health insurance executive and references that prosecutors say line up with the fatal shooting of Thompson outside a Manhattan hotel in December 2024.

Carro also ruled that statements Mangione made before formally receiving his Miranda warning cannot be introduced at trial. The judge concluded Mangione was effectively in police custody once multiple officers surrounded him inside the McDonald’s and a reasonable person would not have believed they were free to leave.

Mangione, 28, has pleaded not guilty to all charges. Prosecutors accuse him of stalking and murdering Thompson in what authorities described as a targeted and ideologically driven attack that shocked corporate America and triggered intense national debate over the health insurance industry.

Despite losing some evidence, prosecutors insist they still have a substantial case. In addition to the gun and notebook, authorities say they possess surveillance footage, fingerprints, DNA evidence, and additional materials allegedly connecting Mangione to the shooting.

The state trial is currently scheduled to begin September 8 and is expected to last roughly six weeks. Mangione also faces separate federal proceedings tied to the case.

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