SEOUL, June 23 (Yonhap) -- Three relatives of Hwang Jang-yop, a former North Korean Workers' Party secretary who defected to South Korea over a decade ago, fled the North last month and are now in a third country en route to the South, sources said Tuesday.The defectors are members of Hwang's extended family, one of the sources who is also a North Korean defector and frequently communicates with defectors abroad, said on condition of anonymity.