Source: U.S. official visiting S. Korea

SEOUL, July 11 (UPI) -- Curt Campbell, U.S. assistant secretary of state for East Asia and the Pacific, will visit South Korea this month, a diplomatic source said Saturday.

The unidentified official at the South Korean Foreign Ministry said issues involving North Korea will be discussed during Campbell's visit to Seoul next week, Yonhap News Agency reported.

"Campbell's trip is aimed at holding consultations with relevant nations and paying introductory visits to the top officials of each country," the official said.

Included in the North Korea discussions will be ways to implement U.N. sanctions against North Korea, the official added.

Campbell will reportedly meet South Korean Foreign Minister Yu Myung-hwan and Kim Sung-hwan, President Lee Myung-bak's top security adviser, during his July 18-20 visit.

The Korea Times reported Campbell will also visit Thailand and Tokyo as part of his three-nation Asian tour.

The U.N. Security Council's Resolution 1874 tightened sanctions against North Korea in retaliation for its May 25 nuclear test, its second since 2006, and subsequent missile tests.