This is an interesting article on Fox News about a NK general that's gone rogue and has been missing since February. Isn't that when we had our mysterious takedown with the blown out window in China OP?
Sauce: http://www.foxnews.com/world/2018/05/04/kim-jong-un-ordered-north-korean-hit-squad-to-hunt-high-ranking-defector-with-nuke-secrets-reports-say.html