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.

Arthur Folasa Ah Loo, 39, a Samoan-born fashion designer, was participating in an anti-Trump protest in Salt Lake City on Saturday when he was shot by a man working security, the police said.

Three people were taken into custody Saturday night in connection with a shooting during a "No Kings" protest in Salt Lake City, Utah, according to police.

Explore an interactive map of the “No Kings” protest and shooting in downtown Salt Lake City below. Some 10,000 people gathered in Salt Lake City for a "No Kings" rally and march as President Donald Trump was overseeing a military parade in Washington, D.C. About an hour into the march, shots were fired.

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

Salt Lake City police said​ in a post to social media that the shooting was "possibly associated" with a "No Kings" demonstration.

At 7:56 p.m., Redd said a police officer heard shots near 151 S. State St. First responders soon found Ah Loo injured on the ground. Medics quickly surrounded him, offering aid, but he died later at a local hospital.

Salt Lake City police are investigating two self-described "peacekeepers" after a fatal protest shooting left one dead and one injured.

Auli'i Cravalho took to Instagram to share a moving tribute to fashion designer Afa Ah Loo, who was fatally shot at a "No Kings" protest on Saturday. The actress reflected on wearing the Project Runway alum's designs at the Moana 2 premiere in November.

Two days after Arthur Folasa Ah Loo was shot and killed at a Salt Lake City protest, over a hundred people showed up to pay tribute to him.