Luigi Mangione, the 27-year-old man accused of fatally shooting United Healthcare CEO Brian Thompson in Manhattan a year ago, appeared in a New York City court on Monday (1 December) for a pre-trial hearing.

His legal team is challenging the admissibility of crucial evidence, including a gun and a notebook that prosecutors claim outline his motive for the murder.

Mangione has pleaded not guilty to both state and federal murder charges, which carry the possibility of the death penalty.

The pre-trial hearing, expected to last several days, includes a series of motions and challenges brought by Mangione’s defence attorneys, who are seeking to exclude certain pieces of evidence presented by the prosecution.

The hearing comes after a September decision in which a judge dismissed terrorism-related murder charges against Mangione, stating that prosecutors had failed to provide sufficient evidence to justify the claims. His defence team is now focusing on excluding evidence found during his arrest in Pennsylvania, including a 3D-printed gun, a silencer, and various electronic devices, which they argue were unlawfully obtained.

The shooting occurred on 4 December, 2024, when Mangione allegedly shot Thompson, a father-of-two, while the victim was walking into an investors' conference in busy Midtown Manhattan. Thompson's death sent shockwaves through the business community, and the incident quickly gained national attention.

In the wake of his arrest, Mangione’s legal team has emphasised concerns over the manner in which he was apprehended at a McDonald's in Pennsylvania. They have argued that the search and questioning procedures during the arrest were unlawful, and they seek to have statements made by Mangione to police excluded from the trial.

At Monday’s hearing, witnesses involved in Mangione’s arrest in Pennsylvania are expected to testify, as the defence aims to challenge the legality of the search and the subsequent evidence obtained. The courtroom was filled with tension as both sides prepared for what is likely to be a lengthy legal battle.

• Guard testifies Luigi Mangione admitted carrying 3D-printed gun

A date for Mangione’s trials—both state and federal—has yet to be set. 

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