husband william snyder has been charged with evidence tampering .
was arrested on friday in new york state in a small town motel .
kelly jo snyder was last seen alive on easter sunday by her family .
snyder 's body was found in a local river near to her home in pennsylvania .
police say william snyder has admitted moving her body from their home .
an autopsy is being carried out on the mother-of-three with results pending .
police in renovo say that more charges could be brought against snyder .