China detains US seismologist

A Chinese-born American seismologist who has published U.S.-funded work on detecting North Korean nuclear tests has been detained in China for nearly two years and faces trial on spying charges, according to his wife, U.S. lawmakers and two hostage advocacy groups.



The case of Youlin Chen, adds an irritant to the tense relationship between the nuclear-armed rivals and comes as President Donald Trump seeks to keep the relationship steady following last year's trade war.



Secretary of State Marco Rubio on March 19 designated Chen, 54, as “wrongfully detained,” making his release a top U.S. priority.



The Trump administration has withheld a public announcement to allow space for high-level diplomacy aimed at securing his freedom, according to his wife, Yufang Rong.



A U.S. source familiar with Chen's case said the administration was "focused on gaining his release from his unjustifiable detention." The source spoke on condition of anonymity to discuss sensitive diplomatic talks.