A man who was believed to be part of a peacekeeping team for the “No Kings” protest in Salt Lake City shot at a person who was brandishing a rifle at demonstrators, striking both the rifleman and a bystander who later died at the hospital, authorities said Sunday.

Arthur Folasa Ah Loo was a former contestant on “Project Runway,” whose designs were beloved by celebrities from “Real Housewives” to “Moana” star Auli’i Cravahlo.