Police investigating the disappearance of Madeleine McCann have begun using ground-penetrating radar equipment to probe for disturbed earth on scrubland near where she was last seen.
A man in plain clothes wheeled the device along a section of ground which was earlier cleared with strimmers in Praia da Luz on the Algarve.
Yesterday officers in Metropolitan Police uniform were also seen carrying out a fingertip search at the same spot as they search for clues as to what happened to Madeleine, who vanished while on holiday in the resort in May 2007, aged three.
Sniffer dogs from South Wales Police that were used during the search for murdered schoolgirl April Jones in 2012 were also seen on the site yesterday.
Police have also been granted permission to investigate two others areas of land, it is understood.
One of these is believed to be even closer to the holiday apartment where the McCann family were staying.
But they have been given a deadline of Friday and it is understood that if nothing of significance is found before then, they must stop.