Frustration Grows in Search for Missing Briton Jay Slater in Tenerife
Family calls for Interpol intervention as local efforts yield limited results in fourth week of search.
- Jay Slater's father urges British authorities and Interpol to assist in the search.
- Family and volunteers face challenging terrain near Slater's last known location.
- A pair of sunglasses found may offer a new lead in the investigation.
- Comparisons drawn to another missing Briton, Ricardo Santana, who vanished in Tenerife five years ago.
- Private investigator suggests Slater could still be alive, surviving on rainwater and plants.
Evening Standard 
