South Korea's President Lee Myung-bak (C) and Thailand's Prime Minister Yingluck Shinawatra (L) are greeted by South Korean children waving South Korean and Thai flags during a welcoming ceremony at the presidential house in Seoul March 24, 2012. Leaders from more than 50 countries will gather in Seoul for a March 26-27 nuclear security summit focusing on measures to protect nuclear materials and facilities and to prevent illicit trafficking. [Photo/Agencies]

BANGKOK - Thai Prime Minister Yingluck Shinawatra began an official visit to South Korea on Saturday before attending the second Nuclear Security Summit in Seoul, Thai News Agency reported.

The visit is aimed to build investors' trust in Thailand's post-flood recovery measures and strengthen ties and cooperation between the two countries.

During her visit on Saturday and Sunday, Yingluck meet with South Korean President Lee Myung-bak to discuss bilateral cooperation in investment, agriculture, military, labor, tourism, nuclear energy and environment.

She is scheduled to visit Hynix Semiconductor Inc, and meet Korea's Chamber of Commerce and Industry chairman Kyung-shik Sohn and chairman of Dong-Ah Eleccomm Company Eui Kyun Su.

She will visit the Han River Flood Control Center's River Information Center and be briefed on water management system.

Yingluck will also speak to students at Ehwa Woman's University, and then deliver a speech at a business luncheon organized by Thailand's Board of Investment and the Federation of Korean Industries.

On Monday and Tuesday the prime minister will attend the Nuclear Security Summit along with leaders of other 52 countries as well as the United Nations, the International Atomic Energy Agency and Interpol.

Thailand will express its political will to strengthen nuclear security and reduce the threat of nuclear-related terrorist activities.