Documents on the drafting of Korean laborers during Japan's colonial rule of the Korean Peninsula turned up at the South Korean Embassy in Tokyo as the staff prepared to move to its new compound, Yonhap News Agency said Sunday.

Quoting South Korean government sources, Yonhap said the documents were apparently prepared by the South Korean government in the 1950s and contained information that has not been previously disclosed on the use of forced labor by Japanese colonial authorities.

The South Korean government demolished its embassy premises in Minato Ward in 2010 and completed its new embassy building in July.