Korean office tower evacuated after mysterious shaking

Authorities in Seoul, South Korea, ordered the evacuation of a 39-story office building Tuesday after occupants reported that it shook for about 10 minutes, local media reported.
There was no seismic activity reported at the time of the tremors, which began about 10:10 a.m., according to a report in The Korea Times.
About 3,000 people were in the building at the time. All were evacuated, and the building, whose tenants include offices, retailers and a theater, will remain closed for up to three days while it undergoes safety inspections, local media reported. (CNN)
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