(Arlington, WA)  --  Search crews are locating more bodies in the debris field from last weekend's mudslide in Washington state.  Authorities in Snohomish County said yesterday the death toll has risen to 21.  In addition to those confirmed fatalities, another four bodies have been discovered.  No one has been pulled alive from the rubble since the landslide hit last weekend.  Heavy showers and flooding have been hampering the search effort the last couple of days.