Luigi Mangione pleaded not guilty Friday to the murder of UnitedHealthcare CEO Brian Thompson in his federal death penalty case — as a judge warned government prosecutors to tell their bosses to

Mr. Mangione’s attorneys call Attorney General Bondi’s declaration that she’ll seek the death penalty ‘a political stunt’.

Luigi Mangione was arraigned in federal court on four charges, including murder through use of a firearm, under which he is eligible for capital punishment.