In the wake of North Korea's claimed nuclear test Monday morning, the Unification Ministry in Seoul is busy discussing countermeasures and analyzing the effect the test will have on inter-Korean relations.

The ministry will also promptly check on the safety of South Koreans staying at the inter-Korean industrial complex in Gaeseong in the North.

In all, there are one-thousand-47 South Koreans currently at the Gaeseong complex, 43 at the Mount Geumgang resort, and 31 in the capital Pyongyang, for a total of over eleven-hundred South Koreans in North Korea.