A Japanese mayor said it is "extremely regrettable" that South Korea pulled out of a memorial ceremony Sunday to honor wartime forced labor victims, local media reported.

South Korea’s government says it has decided not to attend a memorial service near Japan’s Sado Island Gold Mines due to unspecified disagreements with Japan over the event, which stirred longstanding tensions over the abuse of Korean forced laborers at the site before the end of World War II.

SEOUL: The South Korean government plans to hold a separate on-site memorial ceremony for Koreans forced to work at the gold mines on Sado island during Japan's colonial rule, following a last-minute decision to boycott Japan’s memorial event on Sunday (Nov 24).

South Korea says it will not attend a ceremony in Japan to commemorate victims of forced labor in the Sado Island Gold Mines. This comes as the two nations seek to draw together amid regional threats.

Japan will hold a memorial ceremony near the Sado Island Gold Mines, which were listed this summer as a UNESCO World Heritage site after the country moved past years of disputes with South Korea and reluctantly acknowledged the dark side of their history.

North Korea condemned on Saturday recent joint military drills by the United States, South Korea and Japan, warning that it would take immediate actions if needed to defend the state. Last week, the three countries held a three-day joint exercise,

The South Korean foreign ministry said officials will hold a separate memorial on Nov 25. Read more at straitstimes.com.

The Sado mines were listed in July as a UNESCO World Heritage site after Japan moved past years of disputes with South Korea and reluctantly acknowledged the mines’ dark history, promising to hold an annual memorial service for all victims, including hundreds of Koreans who were mobilized to work in the mines.