4.4 Magnitude Seismic Shock Detected in N. Korea after Nuclear Test
The Korea Meteorological Administration said on Tuesday that a four-point-four magnitude seismic shock was detected shortly after North Korea's hydrogen bomb test on Sunday.
The seismic shock broke out at around 12:38 p.m., about eight minutes and thirty seconds after the initial five-point-seven magnitude blast.
The weather agency said that while the exact location or size of the cave-in haven't yet been confirmed, it is estimated to be about seven meters southeast from the nuclear test site.
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