Officials in Qatar also have raised questions about the adoption procedures, including payments to an adoption agency. This is likely because adoption is virtual unknown in traditional Gulf Arab societies, where extended families would provide care.
In addition, an investigative report by Qatari police raised questions about why the Huangs would adopt children who did not share their "hereditary traits" and raised concerns that the children were part of a human trafficking operation or were "bought" for organ harvesting, according to the family's website.
Matthew Huang was working on water engineering projects as part of infrastructure improvements for Qatar's hosting of the 2022 World Cup. The couple has two other children adopted from Africa.
"We are innocent," he told reporters after Tuesday's hearing. "We are suffering. I hope to be reunited with my wife and children soon."