Korea flatly rejected a proposal by Japan to take the issue of Dokdo, Seoul's easternmost islets claimed by Tokyo as its territory, to the International Court of Justice (ICJ), immediately after Tokyo made the proposal to Seoul, a Seoul diplomat said Friday.

"As we have spoken about this issue on many occasions before, we will not respond to the proposal by Japan," the senior diplomat said on the condition of anonymity.

Japanese officials notified the South Korean embassy in Tokyo earlier in the day that Japan's Cabinet was set to endorse the proposal on Friday, the diplomat said, adding that Japanese Foreign Minister Koichiro Gemba will formally deliver the proposal to the Korean Ambassador to Japan Shin Kak-soo later in the day.

It was the first time since 1962 for Japan to make such a proposal to Korea, the diplomat said.

Japan has considered asking the ICJ to resolve the issue of Dokdo since President Lee Myung-bak made an unprecedented visit to the islets on Aug. 10.

Prospects for taking the issue of Dokdo, which lies closer to Korea in the body of water between the Korean Peninsula and Japan, to the ICJ are elusive because Tokyo must secure Seoul's consent to have the case heard at the court.

"The government's stance is that there is no territorial dispute over Dokdo because it is clearly a Korean territory historically, geographically and under international law," a senior official at Seoul's foreign ministry said earlier in the day.

"So, we have neither any reason to go the ICJ nor any intention to go there," the official said on the condition of anonymity.

Dokdo has long been a thorn in relations between Korea and Japan. Korea keeps a small police detachment on the islets, effectively controlling them.

Japan has long laid claims to Dokdo in school textbooks, government reports and other ways, undercutting better ties between the neighboring nations.

Koreans see those claims as amounting to denying Korea's rights because the country regained independence from 1910-45 Japanese colonial rule and reclaimed sovereignty over its territory, which includes Dokdo and many other islands around the Korean Peninsula.

The territorial claims have been also viewed by Koreans as a sign Japan has not fully repented for its imperialist past, along with Tokyo's strict unwillingness to address long-running grievances of elderly Korean women forced into sexual slavery for Japanese troops during World War II. (Yonhap)