On December 11, 2012, a shooting occurred at the Clackamas Town Center in unincorporated Clackamas County, outside the city of Portland, Oregon. The gunman, 22-year-old Jacob Tyler Roberts, ran into the shopping center wearing tactical clothing and a hockey mask and opened fire on shoppers and employees with a stolen Bushmaster M4 Type Carbine firing 16 shots, killing two people and seriously wounding a third person before committing suicide. Roberts had no connection to any of his victims, and it was believed to be a random act of violence.[4] The Clackamas Town Center has a posted policy of prohibiting firearms on the premises.[5]