Luigi Mangione, the man accused of gunning down a health insurance executive in Manhattan, plans to argue at trial that he was in a state of "extreme emotional disturbance" when he allegedly committed the crime, a judge revealed at a court hearing Wednesday.

Lawyers must show that emotional disturbance was so extreme it robbed him of self-control

Luigi Mangione will assert a psychiatric defense at his state murder trial in the killing of UnitedHealthcare CEO Brian Thompson