Police in Portugal are refusing to comment on fresh speculation about Madeleine McCann's disappearance.A Portuguese newspaper has reported that traces of blood have been found on a wall in the holiday apartment in Praia de Luz where she went missing in May.The paper said the blood was discovered early last week by British sniffer dogs specially trained to find remains of bodies.The reports came after police carried out a second search at the home of the main suspect Robert Murat who denies any connection to the abduction.Meanwhile, Belgian police are carrying out DNA tests on a drinks bottle used by a girl resembling Madeleine.A possible sighting of the missing four-year-old in the Flemish town of Tongeren, near the Dutch border, is being investigated by the Belgian authorities.A customer at a restaurant in the town told police she was "100 per cent sure" she had seen the youngster.Madeleine's parents Gerry and Kate McCann have again said they are optimistic they will be reunited with their daughter.Mr and Mrs McCann, who are still in Portugal, are planning a media event on Saturday to mark the 100-day anniversary of Madeleine's disappearance to keep it in the public eye. But they also retain hopes there will be a positive development before that point.© Independent Television News Limited 2007. All rights reserved.
ITN | August 7, 2007