Cadaver dogs, specially trained to pick up the scent of human remains, are being used on farmland where Ben Needham was last seen more that 21 years ago. Holes are being drilled into concrete on Kos with the aim of releasing gasses from below the surface. Det Supt Matt Fenwick from South Yorkshire Police says the search teams are concentrating on many areas on the site, including the mound of soil and rubble near the entrance to the farm.
Kerry Needham has spoken exclusively to Calendar as police step up their search to find her son Ben, on the Greek holiday island of Kos.
Police from the UK are using metal detectors in Greece to search the farmland where missing toddler Ben Needham was last seen alive.