A man was fatally shot during duelling protests by left-wing and right-wing groups in downtown Denver on Saturday.
Police arrested a suspect they said worked as a private security guard.
KUSA-TV said on its website that the man arrested for the shooting was a security guard hired by the television station to provide protection to its crew.
The shooting took place in a courtyard at the Denver Art Museum during a right-wing “Patriot Rally” and a left-wing “BLM-Antifa Soup Drive”.
“The person taken into custody was the individual that we determined shot the other individual,” Denver Police Chief of Investigations Joe Montoya said.
“There was a second individual who was taken into custody in close proximity. We have determined that that individual is not involved in this incident, but they were a person of interest at the time.”
Two guns were found at the scene, Montoya said, as well as a can of pepper spray.
Montoya said police kept the two groups separated, and there were no other arrests during the competing rallies.
A photographer for the Denver Post captured an image of a man spraying a chemical agent at another man with a drawn handgun.