Attorneys representing Luigi Mangione have withdrawn plans to pursue a psychiatric defense in his New York state murder trial, marking a significant shift in legal strategy ahead of proceedings scheduled to begin later this year.
The decision comes shortly after court discussions revealed that the defense had been considering an argument that Mangione was suffering from an extreme emotional disturbance at the time of the fatal shooting of Brian Thompson.
Mangione faces eight felony charges, including second-degree murder, in connection with the December 2024 shooting of Thompson outside an investor conference in Manhattan.
Prosecutors allege that the killing was deliberate and planned, while Mangione has pleaded not guilty to the charges.
In addition to the state case, Mangione is also facing federal charges, including allegations related to stalking.
Court filings indicate that the psychiatric defense notice, which had become the subject of recent legal proceedings, will remain sealed.
Neither prosecutors from the Manhattan District Attorney's Office nor Mangione's attorneys have publicly commented on the decision to abandon the defense strategy.
With the psychiatric argument no longer expected to play a role, attention is likely to shift toward other aspects of the defense team's case as both sides prepare for trial.
The proceedings are expected to be closely watched given the high-profile nature of the allegations and the potential legal implications of the outcome.
Related Tweet:
In a stunning reversal, Luigi Mangione's lawyers told a judge that he will no longer be asserting a psychiatric defense at his state murder trial in the killing of UnitedHealthcare CEO Brian Thompson. https://t.co/hOw4AvaC0U
— The Associated Press (@AP) June 18, 2026
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