Up to 200 dead in North Korean nuclear test site cave-in

A North Korean official said Tuesday that a collapse occurred during the construction of an underground tunnel at the Punggye nuclear test site in North Korea on Oct. 1, leaving 100 people trapped in underground tunnels, A further collapse during the rescue operation trapped a similar number of victims.  The area was seriously weakened by the sixth nuclear test North Korea conducted on Sept. 3, creating a cavity of 60 to 100 meters under the mountain where the test was conducted. It is feared that radioactive substances may leak out if another nuclear test takes place at this crumbling site.