(Salem, OR)  --  Police are investigating the death of a woman whose body was found in a home in Salem.  Investigators say the body of Maria Roldan-DeManzur was found Saturday afternoon in the house on Warbler Court Southeast in Salem.  Her son, 21-year-old Jose Manzur-Roldan, has been arrested as a suspect.  Police say two young children who were in the home have been placed with relatives.