File:YasuoSekitaWaveform5-25-2009.jpg

Summary
Yasuo Sekita, division director of earthquake and tsunami observations for the Japan Meteorological Agency, points to a video display of a graph showing seismic activity in North Korea during a news conference, Tokyo, Japan, 25 May, 2009.

North Korea said it successfully conducted an underground nuclear test, but international experts are dubious.

The U.S. Geological Survey measured the quake at 4.7.

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