Luigi Mangione's legal team has withdrawn its intention to present a psychiatric defense in the state trial concerning the killing of UnitedHealthcare CEO Brian Thompson. The decision was formally communicated in a court filing on Thursday, just one day after the defense had announced its plan in court.

The withdrawal means Mangione will no longer be compelled to turn over records of his psychiatric history to the Manhattan district attorney's office. Judge Gregory Carro ruled that court documents detailing the defense's legal strategy will also remain sealed.

Prior to this reversal, the defense had indicated it intended to argue that Mangione was suffering from an extreme emotional disturbance at the time of Thompson's alleged murder. This strategy would have required Mangione to concede that he committed the crime, according to statements from defense attorney Karen Friedman Agnifilo.

The state trial for Mangione is scheduled to commence on September 8, with a federal trial slated for next year. Mangione has pleaded not guilty to both state and federal charges related to the December 2024 shooting death of Thompson on a Manhattan street. Thompson was the CEO of UnitedHealthcare and a father of two.

Earlier this year, during a hearing, defense lawyers had revealed that Mangione was undergoing psychiatric testing. However, the concession that an extreme emotional disturbance defense necessitates admitting guilt presented a significant hurdle for the legal team.

In a separate development on Wednesday, Judge Carro agreed to dismiss one of the criminal counts against Mangione, specifically related to the possession of a large-capacity ammunition magazine. The implications of the withdrawn psychiatric defense on the overall trial strategy remain to be seen.

Mangione was arrested after Thompson was allegedly gunned down. The case has garnered significant attention, particularly with the high-profile nature of the victim and the unfolding legal proceedings.

With the psychiatric defense now off the table, the prosecution will focus on proving the charges of murder and other offenses, while the defense will likely pivot to other legal strategies to contest the accusations.