TOKYO, Feb. 12 (Xinhua) -- Japanese Chief Cabinet Secretary Yoshihide Suga said Tuesday that Japan will immediately convene a security meeting after an "artificial quake" was detected in the Democratic People's Republic of Korea (DPRK).
Suga said that the Japan Meteorological Agency detected a 5.2 magnitude earthquake with the epicenter locating at 41.2 degree north latitude and 129.3 east longitude in the DPRK territory.
The DPRK vowed to conduct a higher level nuclear test in the area where tremor had been detected.
Suga said Japanese Prime Minister Shinzo Abe has ordered relative government organs to analyze the tremor information and the possible nuclear test.
Abe also said Japan will seek close communication with the United States, South Korea and China on the issue, according to Suga.