Judge reveals Luigi Mangione will pursue psychiatric defense in UnitedHealthcare CEO assassination case

Accused UnitedHealthcare CEO assassin Luigi Mangione will use a psychiatric defense for his state murder trial, a judge said during Wednesday's hearing.

Judge Gregory Carro said during a hearing on Wednesday that Mangione's defense team has told him that they plan to show he was suffering from "extreme emotional disturbance at the time of the occurrence" at the time of the alleged murder.

This is a developing story. The Associated Press contributed to this report.