BEIJING, Sept. 23 (Xinhua) -- China's seismic service CENC detected Saturday a zero-depth earthquake measuring 3.4 on the Richter scale in the Democratic People's Republic of Korea (DPRK).

The epicenter is at 41.36 degrees north latitude, 129.06 degrees east latitude, according to the CENC.

The epicenter is roughly the same with a similar shallow earthquake on Sept. 3, which turned out to be caused by a nuclear test by the DPRK.