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South Korea claims North Korea digging nuclear weapons test tunnel

A long-range rocket belonging to North Korea is seen in this photo. The country is preparing to launch the rocket soon.

April 9, 2012 12:00:00 AM PDT
Concerns about a possible nuclear test in North Korea continue to grow as South Korea says the country is digging underground tunnels that can be used to test nuclear weapons.

South Korea claims recent satellite photos show piles of dirt near the new underground tunnel. This comes as North Korea prepares to fire a long-range rocket.

Other countries say it's a cover for testing missile technology that could be used to fire on the United States; North Korea says it's merely launching an observation satellite.