The documents state he was seen running into the crowd with an assault-style rifle when the alleged peacekeeper shot at him. He was later booked into the Salt Lake County Metro Jail on a charge of murder. KUTV spoke with Utah Attorney Clayton Simms about the charge Gamboa faces.

SALT LAKE CITY (AP) — A military veteran who was trying to stop an alleged gunman and inadvertently shot and killed a demonstrator at a Salt Lake City “No Kings” rally was a “safety volunteer” for the demonstration, according to police and organizers.

People continued to gather around a growing memorial to Afa Ah Loo on Tuesday, placing flowers and mementos to honor the life of the man killed while attending what had been a peaceful protest march.

Ah Loo — an "innocent bystander," fashion designer and former "Project Runway" contestant — was shot by a member of a "peacekeeping" group who fired at a gunman who had an AR-15 style rifle and who witnesses say was running toward the crowd.