Private security guard kills man who pepper sprayed him in Denver

DENVER — A private security guard is being held as a suspect in a deadly shooting near the Denver Art Museum — after he shot and killed a man who pepper sprayed him, according to the Denver Police Department.

Matthew Dolloff, 30, is being on suspicion of first degree murder. He has not been formally charged.

Dolloff was contracted by 9NEWS. 9NEWS said it regularly contracted private security to accompany staff at protests.

DPD originally took two people into custody and later found the second individual, a 9NEWS producer who works in the investigative unit, was not involved in the incident. 

DPD said that a little before 3:50pm, a verbal altercation broke out as protesters were leaving the area.

The incident occurred after a man participating in what was billed a “Patriot Rally” sprayed mace at another man. That man then shot the other individual with a handgun near the courtyard outside the Denver Art Museum, according to a Denver Post journalist who witnessed the incident.

DPD reported the victim was being transported to the hospital at 3:49pm but died an hour later.

Two guns were found on the scene, according to DPD.