(Portland, OR) -- A fourth Multnomah County resident has died from apparent heat-related causes. The Medical Examiner reports the 67-year-old woman was located on Monday in Northeast Portland. The first death was reported on Friday, two people died on Saturday, and one person died on Sunday. On Saturday, a 33-year-old Clackamas County man was transported to a Portland hospital where he died bringing the total number of deaths to five. It can take months for the investigation to determine whether these deaths were caused by the heat.