On August 22, 2009, nine-year-old Gunnar Berg and his eight-year-old sister Kianna were last seen in Fairfax, Virginia, with their mother, Naoko Numakami. What the children’s father, Douglass Berg, believed to be a temporary trip to Japan became an international parental abduction when the mother allegedly took the children to her native country and did not return. Calls and letters to the children at their grandparents’ home in Japan reportedly went unanswered.

A federal kidnapping warrant was issued for Naoko Numakami on October 15, 2010; authorities believe she may be using the alias last name Berg. The family lived a bicultural life and the children spoke both English and Japanese. The father has publicly expressed fear the children may suffer parental alienation and has urged their return to the United States.

Does anyone have confirmed recent sightings or reliable information about Gunnar’s whereabouts or contacts in Japan who might help investigators?