The United States on Thursday voiced mounting concern over Army Pvt. Travis King, who dashed into North Korea two days ago, saying Pyongyang had a history of mistreating captured Americans.
U.S. Army Secretary Christine Wormuth, in her first public comments on the case, said Washington was fully mobilized in trying to contact Pyongyang, including through United Nations communications channels.
But North Korea had yet to offer any response, officials said.