Nearly 30 Members of Scarborough and Ryedale Mountain Rescue have joined the search for missing York woman Sheila Sykes.
The 73-year-old has been missing since Friday March 1.
Search teams are now focussing on Hagg Wood close to her home in Dunnington.
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Sandiford, a former legal secretary originally from Redcar, was convicted of drug smuggling offences and sentenced to death in 2013.
Durham Crown Court heard that one of the male victims suffered a triple-fractured jaw, while left lying in the gutter, unconscious.