Salt Lake City police are investigating the roles of two self-described "peacekeepers" following a fatal shooting at Saturday's protest that left one person dead and another injured, raising questions about unauthorized security at public demonstrations.

Organizers of the "No Kings" protest confirmed the "peacekeeper" who fatally shot a bystander at the Salt Lake City march was a volunteer and military veteran.P

An "innocent bystander" at the "No Kings" demonstration in downtown Salt Lake City was shot and killed Saturday, police said

Utah 50501, the organizers of Saturday's protest in downtown Salt Lake City, say there was an "imminent threat" to protesters before the deadly shooting.

Josiah Paul says he attended today’s No Kings protest in his hometown of Coeur d’Alene, Idaho, as a peacekeeper rather than a participant. He wandered the crowd clad head-to-toe in tactical gear, which included a firearm,