Cause of fatal fire undetermined

Fire investigators say they have not been able to determine the cause of a fatal fire on January 9th in Granite Falls, but is thought to have been accidental.  56 year old David Shawn Dewey died trying to escape the blaze.  The fire on Woods Drive started in the living room and there were multiple electrical components nearby as well as combustible materials near a heating source but the exact cause could not be pinned down.  His son, David Dewey II was able to escape the home.