Bulgarian authorities say a DNA test has confirmed that a Bulgarian Roma woman is the mother of the Greek mystery girl.
The girl has been in the care of a Greek charity after she was seized from the home of another Roma family.
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They made it across a deadly sea this year, but their journey to what they hope will be political asylum had only just begun.
Scientists used modern forensic techniques to review the 'cold case' and determine the victim was probably killed by two blows to the head.