Thailand\'s Prime Minister Yingluck Shinawatra left for an official working visit to Japan during March 6th to 9th to strengthen bilateral ties and revive Japanese investor confidence in Thailand after last year\'s flood crisis. The Thai Prime Minister will have an audience with Japanese Crown Prince Naruhito and will with her Japanese counterpart Yoshihiko Noda to discuss a wide range of issues covering mutual interests, according to Thailand\'s (MCOT online news). Yingluck was scheduled to return to Thailand on Friday.