N. Korea Fires Short-Range Missile

North Korea appears to have test-fired a short-range missile Monday on its east coast after it conducted its second nuclear test, a South Korean source said.

The missile, with an estimated range of 130 kilometers, was fired from the coastal site where North Korea launched its long-range rocket on April 5, the source said.

The latest launch comes as tension peaks on the Korean Peninsula after North Korea claimed it succeeded in detonating a more powerful nuclear device in its northeastern region.

"The U.S. and South Korean authorities are working together to assess the missile launch," the source was quoted as saying by Yonhap News Agency.

North Korea conducted its first nuclear test in October 2006.