Nichkhun Horvejkul, the Thai member of the South Korean boy group 2PM, has been approached to join Prime Minister Yingluck Shinawatra's upcoming "roadshow" to South Korea, a source said yesterday.

There were no other details from Government House. Nichkhun, who is also a model and actor, could not be reached to comment on the matter.

Yingluck, who recently led her government's first "roadshow" to Japan, is set to make her official visit to South Korea from Saturday until next Tuesday (March 24-27). She'll be aiming to restore confidence among South Korean investors following last year's flood crisis. The PM also is scheduled to attend the Nuclear Security Summit in Seoul with leaders from 51 other countries. She'll meet with South Korean President Lee Myung-bak for discussions on bilateral trade, investment and cooperation on agriculture, military, labor and tourism.

Yingluck is also expected to meet top figures in South Korea's public and private sectors.