Stephen Bosworth, U.S. envoy on the Democratic People's Republic of Korea (DPRK), is to arrive in Seoul Tuesday afternoon for talks on restarting long-stalled six-party talks aimed at dismantling the DPRK's nuclear program.

The envoy is scheduled to meet Wednesday with South Korea's chief negotiator to the six-party nuclear talks, Wi Sung-lac, and foreign minister Kim Sung-hwan, according to the foreign ministry in Seoul.

His trip, which will also bring him to China and Japan, is expected to lay foundations for the upcoming meeting between U.S. President Barack Obama and Chinese President Hu Jintao in Washington later this month, foreign ministry spokesman said Monday.

The flurry of diplomatic activities come after Pyongyang, which once declared the six-party talks dead, expressed its will to return to the negotiating table while claiming it has developed a new, highly sophisticated uranium enrichment facility.

The last round of talks was hosted by China in December 2008.