Luigi Mangione's lawyers will argue psychiatric defense in New York state murder trial

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Updated on: June 17, 2026 / 10:42 AM EDT

/ CBS New York

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A state court hearing revealed Luigi Mangione's lawyers will argue that he was suffering from an extreme emotional disturbance when he allegedly killed UnitedHealthcare CEO Brian Thompson in New York City in December 2024.Mangione was in a New York City courtroom Wednesday morning for a hearing regarding his state murder case. He also faces a federal trial.By asserting this defense, Mangione would effectively admit to killing Thompson, but because of mitigating circumstances. Mangione could be convicted of the less serious charge of manslaughter rather than murder if a jury finds that he was emotionally disturbed. Judge Gregory Carro announced that he is unsealing court records related to the defense's plan, which was filed in September. Possession of a weapon charge dismissedProsecutors said they are not moving forward with count nine of the indictment, which was criminal possession of a weapon. This charge involved the magazine that was suppressed by the court.