The 1980 Hague Convention is an agreement between certain countries which aims to ensure the return of an abducted child to the country where he or she normally lives.
All cases that come under the Hague Convention are dealt with by the Central Authorities in the UK.
To find out which countries are part of this Convention, visit the Hague Conference Website.
If a child has been taken to a country that has not signed the Hague Convention parents may need to apply for custody and permission to bring their child back to the UK through the courts of that country.
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Matalan said: "It is with great sadness we can confirm...both victims worked at our Cardiff branch."
Police believe a tree currently growing near the farmhouse where the 21-month-old toddler was last seen in 1991 was not there at the time.
The 21-year-old was using a portable toilet in Sydney when he was bitten near to the same area as in a previous incident in April.