Tunnel Collapse at North Korea nuclear test site 'leaves 200 dead'

A tunnel has collapsed at Punggye-ri nuclear test site in North Korea killing around 200 people, according to reports.

It is thought 100 people were trapped by a first collapse, and another 100 by a second during an unsuccessful rescue operation, Japanese station TV Asahi reported on Tuesday.

The accident at the underground test site happened on October 10, according to South Korean news agency Yonhap.

The disaster has prompted fears of a radiation leak.