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The southeastern city, home to the country’s largest steelmaker, was hit by a 4.6 magnitude quake at 5:03 AM, 5 kilometers northwest of the city’s northern district at a depth of 9 kilometers.
It was the second strongest quake in the region, following a 5.4 magnitutde quake in November.
Posco’s steel mill in Pohang is running without abnormal signs, the steelmaker said.