(2nd LD) N. Korea's ceremonial head in Beijing en route to Africa

(ATTN: UPDATES in para 4; ADDS report by N. Korea's state media in last 3 paras)

BEIJING/SEOUL, May 17 (Yonhap) -- North Korea's ceremonial head of state, Kim Yong-nam, arrived in Beijing on Tuesday, apparently en route to some African nations, a dipl