Nicholas Salvador accused of beheading Palmira Silva in her garden . He pleaded not guilty on grounds of insanity at London 's Old Bailey September 2014 . Also pleaded not guilty to a separate assault charge , citing same reason . Mrs Silva was found dead in a garden in Edmonton in today .
Nicholas Salvador accused of beheading Palmira Silva in her garden . He pleaded not guilty on grounds of insanity at London 's Old Bailey today . Also pleaded not guilty to a separate assault charge , citing same reason . Mrs Silva was found dead in a garden in Edmonton in September 2014 .