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.

Newly released video appears to show the man arrested on suspicion of murder for the death of an innocent bystander at a “No Kings” protest in Salt Lake City Saturday walking away with his rifle pointing down moments before a volunteer “peacekeeper” opened fire in his direction,