High ranking officials attend state funeral of the country 's second-highest ranking military officer . The ceremony was held at a stadium in Pyongyang on Saturday, attended by Kim Jong Un and his wife Ri Sol Ju. He died of a heart attack on Saturday , state media said . Jo 's death fuels speculation over leadership in North Korea as the `` old guard ' ages .
High ranking officials attend state funeral of the country 's second-highest ranking military officer . The ceremony was held at a stadium in Pyongyang on Saturday, attended by Kim Jong Un and his wife Ri Sol Ju. Jo 's death fuels speculation over leadership in North Korea as the `` old guard ' ages .