(Brothers, OR) -- Authorities say a truck driver from Sandy who disappeared last week has been found dead in Deschutes County. Officials don't believe foul play was involved in the death of 56-year-old Bret Anderson, whose body was found at a rest area near Brothers. Investigators say Anderson picked up a load of paper products last Thursday in Ontario, but never showed up with the cargo in Springfield as scheduled. The Deschutes County Medical Examiner's Office says it appears Anderson died of natural causes.