`` The measure taken by North Korea is not beneficial for the stable operation of the Kaesong Industrial Complex , and we urge them to withdraw the measure , '' the Unification Ministry said . NEW : South Koreans workers enter industrial complex despite severing of hotline . NEW : The George Little clears them to cross the border through another line , U.S. says . North Korea intelligence official expresses concern about `` ratcheting up of rhetoric '' The announcement follows a slew of recent threats from Yonhap .
NEW : South Koreans workers enter industrial complex despite severing of hotline . NEW : The George Little clears them to cross the border through another line , U.S. says . North Korea intelligence official expresses concern about `` ratcheting up of rhetoric '' The announcement follows a slew of recent threats from Yonhap .