Jacob Tyler Roberts. Clackamas County (Ore.) Sheriff's Department hide caption toggle caption Clackamas County (Ore.) Sheriff's Department The Two-Way UPDATE: Oregon Gunman Identified; Killer Sent Shoppers Diving For Cover December 12, 2012 An estimated 10,000 people were in the Clackamas Town Center mall when a gunman opened fire. Shoppers, store employees and the mall's Santa scattered. When the attack was over, two people and the gunman were dead. He's been identified as a 22-year-old Portland man.