Luigi Mangione Says Linking Him to Blackstone Killer Biases Jury

Luigi Mangione said federal prosecutors biased potential jurors by suggesting he inspired a recent mass shooting in Manhattan.

The government is “well-aware that there is absolutely no link” between Mangione, who’s accused of murdering UnitedHealth Group executive Brian Thompson, and Shane Tamura, who killed four people and himself at the offices of Blackstone and the NFL, Mangione attorneys said in a court filing Friday.

“There is no evidence that Mr. Tamura was influenced in any way by the murder of Mr. Thompson or by Mr. Mangione’s writings criticizing the abusive practices of the health insurance industry,” they said.

The government’s link is an “an attempt to prejudice potential jurors and thereby Mr. Mangione’s right to a fair trial,” Mangione’s filing argues.

Manhattan federal prosecutors in August said Mangione has inspired others to vigilante violence, citing Tamura. The government made the argument in response to Mangione’s request for more information on what prosecutors would argue at a potential capital sentencing phase of a trial.

Prosecutors said they weren’t required to turn over more information on those arguments yet but that Mangione’s dangerousness is one factor justifying the death penalty that’s apparent from alleged copycats like Tamura.

Mangione on Friday disputed he’s inspired any violence and reiterated his request for more information on the government’s case for the death penalty. “The Government’s attempt to link Mr. Mangione to the likes of Shane Tamura without any evidence is further proof of the political nature of the tragically unfortunate decision to seek to execute Mr. Mangione,” they said.

Judge Margaret M. Garnett, of the US District Court for the Southern District of New York, will decide if the government needs to tell Mangione more at this stage about its death penalty theory.

Mangione is represented by Agnifilo Intrater.

The case is United States v. Mangione, S.D.N.Y., No. 1:25-cr-00176, 9/5/25.