A Greek appeal for help in identifying an unknown girl who had been living with a Roma couple has triggered a global outpouring of sympathy and tips.
Greek police are investigating everything from a potential link with child trafficking rings to a welfare scam as they seek the child's biological parents.
Authorities have also sought assistance from Interpol, the international police agency, which has 38 girls younger than 6 in its missing persons database.
None however fit the girl's description and the agency only receives cases when member governments seek its help.
- Karen Stauss, director of programs for the group Free the Slaves.
This segment aired on October 21, 2013.