A Japanese man was taken into custody in North Korea earlier this month for a yet unknown reason, and Tokyo is seeking his release, Japanese government sources said Saturday.The man is in his 30s and entered North Korea as a member of a tour organized by a foreign travel company, the sources said. The man, who apparently had visited North Korea before, was detained while in the western port city of Nampo, they added.A Foreign Ministry official would not say whether the ministry knew his purpose in visiting North Korea.North Korean Foreign Minister Ri Yong Ho also would not respond to report…READ FULL ARTICLE