SALT LAKE CITY (AP) — Utah investigators sought help from the public as they worked to unravel who was at fault when a safety volunteer at a weekend “No Kings†rally fired at an alleged gunman and inadvertently hit and killed a protester.

The safety volunteer, who has not been identified publicly, fired three rounds at Arturo Gamboa, 24, who had allegedly brandished a rifle at Saturday's crowd in downtown Salt Lake City. The gunshots hit both Gamboa and protester , according to the Salt Lake City police.

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