Is North Korea Laying The Groundwork For Another Nuclear Test?

A passenger walks past a television report on North Korea's nuclear test at a railway station in Seoul February 12, 2013. REUTERS/Kim Hong-Ji

Is North Korea Preparing For Another Nuclear Test? -- Voice of America

Analysts say recent construction work at a North Korean nuclear site suggests Pyongyang may be preparing to conduct a fourth underground nuclear test.

The U.S.-Korea Institute at Johns Hopkins University says new satellite images show two new tunnel entrances and other construction work ongoing at the North's Punggye-ri nuclear test site.

The report on the institute's blog, 38 North, said there are no signs a nuclear test is imminent. It said the tunnels could either be used for nuclear detonations or for other purposes, such as ventilation.

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More News On Reports That North Korea Is Preparing Another Nuclear Test

Increase in Activity Reported at North Korean Nuclear Test Site -- New York Times
North Korea Builds New Tunnels at Nuclear Test Site, Report Says -- Bloomberg Businessweek
Satellite images show activity at North Korea nuclear test site: U.S. institute -- CTV/AP
Satellite images show North Korea preparing to conduct future nuclear tests, researchers say -- FOX News
N Korea completes work on nuclear test site: US think tank -- Channel News Asia
Satellite pictures show major progress at North Korea nuclear test site -- Japan Daily Press
N. Korea preparing new tunnels for possible nuke test explosions -- Business Standard