Lawyers for Luigi Mangione, a former employee of UnitedHealthcare and Ivy‑League graduate, are preparing a psychiatric defence for his state murder trial. According to CBS News, the defence will argue that Mangione suffered from "extreme emotional disturbance" at the time of the shooting of UnitedHealthcare Chief Executive Brian Thompson.

If the jury accepts the psychiatric defence, Mangione could be convicted of manslaughter instead of murder, potentially leading to a substantially lighter sentence.

Judge Gregory Carro has announced that he will unseal the court records relating to the defence strategy, a move that provides transparency into the legal arguments being considered.

Mangione was in the New York courtroom on Wednesday for the discussion over the psychiatric defence, though he was originally scheduled to be in court two days earlier, when his appearance was cancelled due to a reported prosecution mistake.

In addition to the murder charge, Mangione faces federal stalking charges that could carry a maximum life‑in‑prison sentence. Earlier this year, federal murder and firearms charges were dropped, leaving the national spotlight on the state proceedings slated to begin on 8 September.