http://www.nytimes.com/2016/01/06/wo...test.html?_r=0
5.1 Earthquake detected at previous Nuclear test site.
NK have themselves claimed to have detonated a Hydrogen bomb. Nobody but NK can substantiate this but I've already seen evidence that this is indeed a Nuclear test using previous readings to distinguish earthquake from nuke.
http://imgur.com/a/1diJr Top: 2013 test, bottom being this possible test
Must be the season for foreign aid again
Although keep in mind North Korea successfully launched a ballistic missile in December.