Luigi Mangione will assert psychiatric defense in murder case in UnitedHealthcare CEO's killing

Luigi Mangione will use a psychiatric defense in his state murder trial for the killing of UnitedHealthcare CEO Brian Thompson, arguing he was under extreme emotional disturbance. A judge approved the defense strategy, which could lead to a manslaughter conviction instead of murder. The case includes federal charges and evidence like a 3D-printed pistol and a notebook linking Mangione to the crime.