KATHMANDU: Three residential ambassadors and one non-residential ambassador to Nepal on Wednesday submitted their letters of credence to the President Bidya Devi Bhandari amid a special ceremony at the Office of the President in Sheetal Niwas in Kathmandu. According to the press statement released by the President's Office today, residential ambassadors Bhakavat Tanshul of Thailand, Park Young-Sik of Republic of South Korea, Peter Graeme Budd of Australia and non-residential ambassador Gyula Petho of Hungary based in New Delhi presented their letters of credence to the President. High ranking government officials were also present on the occasion.