Judge weighs backpack evidence in Luigi Mangione murder case

A judge’s ruling on the contents of Luigi Mangione’s backpack went to the heart of a case already built around a killing that jolted New York and the health insurance industry. If Justice Gregory Carro suppressed the evidence, prosecutors could lose some of the most direct physical items they say connect Mangione to the shooting of UnitedHealthcare chief executive Brian Thompson.

Mangione, 28, returned to a New York courtroom on Monday as Carro weighed whether police can use items recovered after Mangione’s arrest in Altoona, Pennsylvania, on Dec. 9, 2024. Prosecutors say the backpack held a pistol, a silencer, a loaded magazine and writings or journal entries. The defense has argued that officers searched the bag without a warrant and questioned Mangione without the proper legal warnings, making both the objects and his statements inadmissible.

The evidentiary fight matters because the state case has already narrowed. Carro dismissed two terrorism-related counts in September 2025, leaving second-degree murder charges in place. Mangione has pleaded not guilty. His state trial is scheduled for Sept. 8, 2026, and is expected to last six weeks, giving the prosecution and defense only a limited window to define what jurors will hear first and what narrative will frame the case.

The killing that put Mangione before the court took place on Dec. 4, 2024, outside the New York Hilton Midtown, where Thompson was shot from behind while heading to an investors conference. Prosecutors have described the attack as planned. The case has since taken on a broader public meaning because it landed in the middle of anger over insurance denials and rising medical costs, turning a murder prosecution into a test of how the justice system handles a crime that has become a symbol of public frustration.

Mangione also faces a federal case. In January 2026, a federal judge ruled prosecutors could not seek the death penalty, removing capital punishment from the federal track and clearing the way for that trial to move forward later in 2026 if the case proceeds as scheduled.

For the Manhattan district attorney’s office, the backpack ruling may matter as much as any dramatic courtroom exchange. If Carro admits the evidence, the state gains a physical chain linking Mangione to the arrest in Pennsylvania and the killing in Midtown Manhattan. If he does not, the prosecution will enter trial with a narrower case and a heavier burden to prove intent, identity and planning without the objects it says told the story.