(Oregon City, OR) -- The Clackamas County Sheriff's Office has arrested a suspect in the murder of Jennifer Stuart in August. Her remains were found off Forest Service Road 45 in rural Clackamas County. Stuart's boyfriend, 56-year-old William Blake, has been arrested for her murder. His 15-year-old son was arrested for allegedly helping his father move Stuart's remains. His 17-year-old son was interviewed, but not arrested.