Greek authorities have launched a worldwide appeal to find the parents of a mystery girl found during a search of a Roma camp.
Police from the UK are using metal detectors in Greece to search the farmland where missing toddler Ben Needham was last seen alive.
Police have begun searching a plot of land on the Greek island of Kos where it's believed Ben Needham may have been buried.
South Yorkshire Police say there is no "direct correlation" between Ben Needham's disappearance and a girl found in Greece.
The girl is suspected to have been abducted after the couple claiming to be her parents turned out not to be related after a DNA test.
She was discovered in a Roma gypsy camp, where there had been a reported sighting of Ben who disappeared from a Greek island 21 years ago.
"South Yorkshire Police is aware of the case currently being investigated by Greek police after a young girl was found at a Roma settlement in the country.
"At this stage there appears to be no direct correlation between this and the disappearance of Ben Needham, who was 21 months old when he went missing on the island of Kos in 1991.
– South Yorkshire Police spokesman
"The case of Ben Needham continues to be investigated by the Greek authorities and South Yorkshire Police continues to support his family.
"No investigation is currently being carried out by the force in light of this recent case and officers from South Yorkshire Police will only become involved should authorities in Greece require our assistance."
Watch: exclusive interview with Kerry Needham urging Greek police to look for Maria case links
The family of Ben Needham, who went missing on a Greek Island 22 years ago, say they want a gipsy couple now suspected of abducting a young girl to be questioned over the disappearance of Ben.
The girl was found in a town where Ben's family were once told he was being held by local gipsies. Lisa Walton reports.
Greek police who raided the camp of a Roma Gypsy community have discovered a four-year-old girl they fear may have been trafficked or abducted by the family she was found with.
The girl, going by the name of 'Maria', looked nothing like the couple she was living with, officials said.
DNA tests have since proved she was not their biological child.
Now, the family of Ben Needham, who went missing on the Greek island of Kos in 1991, says the discovery has given them new hope.
The gypsy camp, in Larissa, central Greece, was investigated by police. A prisoner in the town told police Ben was being held there.
Speaking exclusively to Calendar, his mother Kerry said today: "My family and I are extremely delighted by the news of the 4-year-old girl who has been found in a gypsy Camp in Larissa.
"We have always believed that Ben's abduction was gypsy-related, and have had a long ongoing inquiry in Larrisa. We hope that the investigation into Ben's disappearance will now be looked at again in Larrisa with the British and Greek police."
A four-year-old girl found living on a Roma settlement with a family who was not related to her has been taken to a hospital for a medical check and will then be transferred to a home of the child welfare charity organisation Smile of the Child.
The president of the organisation, Costas Yannopoulos, said the girl was in a state of shock and confusion.
The president of a children's organisation has said that a four-year-old girl found in a Roma camp in Greece could have been kidnapped.
Kostas Yannopoulos told journalists: "It shows that it could be kidnapping and combined effort of these people to buy and sell children, and when you have a good commodity like this one, they try to find a better price...because she was blonde, she was cute".
An MP is backing calls for the case of missing Ben Needham to get the same support as that given to the family of Madeleine McCann.
Labour's Angela Smith says she will ask the Government to help the Sheffield family in the same way that they have backed Kate and Gerry McCann , whose daughter went missing in Portugal six years ago.
Ben's grandfather has told Calendar that they've been "forgotten," and ignored by successive Governments after the toddler went missing in 1991 on Kos.
This week a TV reconstruction of Madeleine's disappearance was shown, following a two-year, five million pound investigation by the Metropolitan Police. Mark Witty reports
The grandfather of Ben Needham says his family has been let down by successive governments, because the money given to the search for his grandson, doesn't match that spent on the Madeline McCann inquiry.
There'll be more from Eddie Needham on Calendar at 6pm on ITV.
The grandfather of Ben Needham says his case should get the same financial support as the search for Madeleine McCann. Eddie Needham claims the Government has given his family no help.
Madeleine's case is being investigated by 37 full-time Metropolitan Police officers and six in Portugal. Ben went missing from the Greek island of Kos in July 1991 when he was 21 months old.