In a court filing Thursday, Mangione's legal team said they won't file psychiatric evidence in the 28-year-old's state murder case. The move came a day after his lawyers said they planned to pursue a psychiatric defense.

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

Magione's lawyers are going to argue he was suffering from “extreme emotional disturbance at the time of the occurrence."