Belgian authorities are calling for DNA samples of children adopted from the Democratic Republic of Congo, in order to establish if their parents are still alive.
Authorities believe the children may have been kidnapped and falsely declared as orphans while their biological parents thought they were sending them to a Kinshasa holiday camp.
Though fears of child smuggling in the Democratic Republic of Congo prompted the country to halt exit permits for adopted children in 2013, some cases continued to be processed as they had already begun.