Tokyo: Japan will hold a memorial ceremony next week to honor workers, including many Koreans, who were forced into hard labor at an old mine complex during World War II, a Japan-based committee organizing the event said Wednesday. The ceremony is set to take place at the Aikawa Development Center on western Sado Island, off Japan's west coast, this Sunday. According to Yonhap News Agency, South Korea's foreign ministry has confirmed that the ceremony, scheduled for 1 p.m., will be attended by officials from the executive committee, civic groups, and the Sado city and central governments. Additionally, eleven family members of the Korean victims will be present at the ceremony, as noted by a Seoul official. The announcement follows concerns in South Korea about Japan's sincerity after delays in fixing the timing of the memorial service. These concerns arose regarding Japan's commitment to presenting the full history of the Sado site, which is linked to the forced mobilization of Koreans. Japan had previousl y promised to hold the memorial ceremony as a condition for the inscription of the Sado gold and silver mines as a UNESCO World Heritage site in July. Tokyo had initially indicated that it was considering holding the ceremony as early as August and potentially on a regular basis in the future.