The “No Kings” protest in Salt Lake City was struck by violence when a man allegedly brandished a rifle near the crowd, prompting a volunteer for the event to fire three shots, hitting the man and a protester who later died,

The alleged rifleman, Arturo Gamboa, 24, was also shot and was taken into custody on a murder charge, Salt Lake City Police Chief Brian Redd said at a Sunday news conference. The bystander who was killed was identified as Arthur Folasa Ah Loo, 39, a fashion designer from Samoa.

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.