
Japanese broadcaster TV Asahi said on Tuesday that a tunnel collapse at North Korea's nuclear site may have killed at least 200 people.
About 100 workers at the Punggye-ri nuclear site were affected by the initial collapse, which took place around September 10, the broadcaster said.
A second collapse during a rescue operation meant it was possible the death toll could have exceeded 200, TV Asahi said citing unnamed sources familiar with the situation.