 A fifth Oregonian has died from apparent heat-related causes. The Multnomah County Medical Examiner reports the 67-year-old woman was found on Monday in northeast Portland. The first Portland death was reported Friday and two others died on Sunday. On Saturday, a 33-year-old Clackamas County man was taken to a Portland hospital where he died. It can take months to determine conclusively if the deaths were heat-related.