President Yoon Suk-yeol has boycotted the mine’s commemoration in Japan, purportedly over Tokyo’s failure to recognise forced Korean workers.

South Korea has paid tribute to wartime Korean forced laborers at Japan’s Sado gold mines in a memorial ceremony.

South Korea expressed regret to Japan on Monday over Tokyo's attitude towards a memorial service held for labourers including Koreans forced to work in Japan's Sado mines during World War Two, Seoul's foreign ministry said.

After boycotting one organised by Tokyo, South Korea held its own memorial event on Monday for compatriots forced to work in a Japanese mine during World War Two, highlighting lingering sensitivities between the countries.

Under the leadership of Japanese Prime Minister Ishiba Shigeru and South Korean President Yoon Suk-yeol, there is hope that recent momentum will continue.

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,

South Korea has expressed regret to Japan over the way Tokyo has handled the memorial ceremony for the wartime forced labor victims, including Koreans, from an old Japanese mine complex during World War II,