Delegates from six nations are in Beijing for working group nuclear talks opening Wednesday.

In Tokyo, a Japanese daily says the Japanese government plans to demand North Korea specify the nuclear facilities it has offered to freeze in return for compensation.

The Yomiuri Shimbun said Tuesday that Tokyo will ask Pyongyang to clarify the extent of nuclear development facilities North Korea will freeze and the procedure of the freeze.

Pyongyang insists that it would freeze only its nuclear facilities being operated for military purposes but South Korea, the United States and Japan demand that North Korea dismantle all its nuclear facilities in a complete, irreversible and verifiable manner.

The nuclear facilities which have so far been confirmed to exist in North Korea include a five thousand kilowatt graphite-moderated reactor, a spent fuel reprocessing plant in which weapons-grade plutonium can be extracted and an incomplete 50 thousand-kilowatt graphite reactor in the Yongbyon complex.