South Korean President Roh Moo-Hyun and his wife Kwon Yang-sook walk toward the border line as they head for DPRK in Paju, north of Seoul, in this October 2, 2007 file photo. South Korea's former President Roh died on May 23, 2009 after he fell while mountain hiking, Yonhap news agency quoted police as saying. [Xinhua]