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.

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

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.

South Korea’s decision not to participate in what was envisioned an a moment of reconciliation highlighted the perceived lack of sincerity in Japan’s treatment of historical issues.

South Korea has paid tribute to wartime Korean forced laborers at Japan’s Sado Island Gold Mines in a memorial ceremony