An earthquake with a preliminary magnitude of 5.8 rocked South Korea's southeastern region Monday, but no major damage was reported, authorities said.
An initial quake with a magnitude of 5.1 occurred at 7:44 pm (1044 GMT), with its epicenter about nine kilometers (5.4 miles) southwest of Gyeongju, said the Korea Meteorological Administration (KMA).
A second quake with a magnitude of 5.8 rocked the same region at 8:32 pm. The second quake was felt across South Korea, shaking buildings even in Seoul.
There are nuclear power complexes in Gyeongju and nearby areas, but Korea Hydro and Nuclear Power Co. said all nuclear reactors were safe.
Two people were injured, the Ministry of Public Safety and Security said, adding it was the strongest quake in history since South Korea started collecting related data.
An old woman was injured after being hit by a falling TV set in an apartment building in Gyeongju, Yonhap News reported, adding 22 aftershocks were felt in southern provinces.
In the quake-stricken region, trains came to a brief halt and many people living in high-rise apartments and buildings were evacuated.
Aju News Lim Chang-won = cwlim34@ajunews.com