 At least four Oregonians have died from suspected heat-related causes in the ongoing heat wave. Multnomah County's medical examiner is investigating the deaths of three men from Portland, ages 64, 75, and 84. A 33-year-old man also died at a Portland hospital after being transported from another county. With triple-digit highs expected again today, health officials urge people to check on their neighbors and family members who may be vulnerable to the heat.