In a move that would cross a red line for the United States and its allies, North Korea appears to be making preparations at its main nuclear test site that would allow it to quickly conduct its seventh atomic test, a media report quoting South Korean government sources said Sunday.

Pyongyang appears to be working on a “shortcut” to a tunnel at its Punggye-ri underground test facility, apparently in an attempt to repair the site, which was shuttered in 2018, the Yonhap news agency reported, quoting unidentified sources in Seoul.

Unable to view this article?

This could be due to a conflict with your ad-blocking or security software.

Please add japantimes.co.jp and piano.io to your list of allowed sites.

If this does not resolve the issue or you are unable to add the domains to your allowlist, please see out this support page.

We humbly apologize for the inconvenience.

In a time of both misinformation and too much information, quality journalism is more crucial than ever.
By subscribing, you can help us get the story right.