On Friday,... U.S. authorities arrested a Korean-American man... who is a part of a group allegedly responsible... for the recent storming of a North Korean embassy in Spain. <br />According to Reuters, citing sources familiar with the matter,... former U.S. Marine Christopher Ahn was taken into custody on Thursday,... and appeared at a federal court in Los Angeles on the following day. <br />The U.S. Justice Department gave no further comment on the arrest. <br />Armed federal agents also raided the apartment of Adrian Hong,... who is suspected of masterminding the embassy incident,... but he was not present at his residence when the raid occurred.<br />Ahn and Hong are members of a group calling itself... Cheolima Civil Defense... which seeks the overthrow of North Korean leader Kim Jong-un. <br />