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.

Arturo Gamboa was identified as the suspect in the shooting of 39-year-old Arthur Folasa Ah Loo at a 'No Kings Day' protest in Salt Lake City

A community is mourning after a shooting at the "No Kings" protest in Salt Lake City following the death of Arthur Folasa "Afa" Ah Loo.According to Salt Lake Ci

As prosecutors consider potential criminal charges against the man whose alleged actions caused the shooting death of another man during Saturday's "No Kings" protest, the investigation into the so-called "peacekeeper" who actually fired the fatal shot also continues.

Police have identified the man who was shot and killed Saturday night during a protest in downtown Salt Lake City, and members of the community are mourning the loss.

As 40 people sheltered in a covered space in downtown Salt Lake City after the No Kings shooting, somebody saw a man with a gun.

Arthur Folasa Ah Loo, a 39-year-old former contestant on the fashion design competition series, died Saturday after being struck by gunfire, as police refer to him as an “innocent bystander.”

Arturo Gamboa, 24, was charged with murder after allegedly firing an AR-15-style rifle during the June 14 “No Kings” protest in Salt Lake City, killing bystander Arthur Folasa Ah Loo. The shooting caused chaos among 10,

Officers arrested 24-year-old Arturo Gamboa, who had an AR-15-style rifle and a gas mask and was injured in the incident. But police say he wasn’t the shooter. According to a report by our Fox affiliate,