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.

Utah officials are investigating the role that so-called peacekeepers played in the killing of celebrated fashion designer Arthur Folasa Ah Loo on Saturday at the “No Kings” demonstration in Salt Lake City,

Two days after a bystander was shot and killed by a stray bullet at Saturday's "No Kings" protest, the SLCPD confirmed it is investigating the role of the “peacekeeper” who fired their weapon at a suspect who faces murder charges.