` He did n't appear to be a very healthy person , '' Park said . This could be evidence of first leadership purge under new leader , he says . Pyongyang appointed a new field marshal a day after removing its army chief . State media does n't say whether Hyon Yong Chol replaces the army chief . The coup is probably the work of Kim Jong Un 's supporters , an expert says .
This could be evidence of first leadership purge under new leader , he says . Pyongyang appointed a new field marshal a day after removing its army chief . State media does n't say whether Hyon Yong Chol replaces the army chief . The coup is probably the work of Kim Jong Un 's supporters , an expert says .