A dispute between rival clubs at a Denver motorcycle expo ended in a fatal shooting on January 30, 2016. Victor Mendoza, 46, a member of the Mongols Motorcycle Club, was shot in the chest and killed during a chaotic brawl at the National Western Complex. The fight involved members of the Mongols and the Iron Order Motorcycle Club; the two sides offer different accounts of who started the confrontation.

The man who fired the fatal shot was identified as Derrick Duran, an off-duty Colorado Department of Corrections officer and Iron Order member. Reports say shots were fired by both men: Duran allegedly shot first, wounding someone; Mendoza then shot and wounded Duran; Duran returned fire, killing Mendoza. The Denver District Attorney declined to bring criminal charges, concluding prosecutors could not overcome a claim of self-defense.

The expo’s second day was canceled and the following year’s event was also called off. Mendoza’s widow filed a wrongful death suit alleging inadequate security and lack of weapons screening. Does anyone have additional details about the altercation or the security arrangements that day?