DEADLY WEAPON: Louisiana police displayed this photo of a weapon used by shooter in slaying of police. He had another rifle and pistol.
shot by police after he killed three police officers and wounded others in Baton Rouge, had filed court papers in Missouri declaring himself a "sovereign citizen."
This declaration of being ungoverned by law has a dark past in Arkansas. A father-son team of "sovereign citizens" killed two West Memphis officers after a traffic stop in 2010. They were killed, too, in the shootout.
At a press briefing today
, Louisiana officials said Long came to Louisiana with a plan to do harm, though much remains unclear about his motives. He had been in Baton Rouge a few days and had "interacted" with people in the city, authorities said