A Singaporean man has pleaded guilty in the US to working as an agent of China, the latest incident in a growing stand-off between Washington and Beijing.
Jun Wei Yeo was charged with using his political consultancy in America as a front to collect information for Chinese intelligence, US officials say.
Separately, the US said a Chinese researcher accused of hiding her ties to China’s military was detained.
China earlier ordered the closure of the US consulate in Chengdu.
The move to shut down the diplomatic mission in the south-western city was in response to the US closing China’s consulate in Houston.
US Secretary of State Mike Pompeo said the decision was taken because China was “stealing” intellectual property.
Chinese Foreign Ministry spokesman Wang Wenbin responded by saying that the US move was based on “a hodgepodge of anti-Chinese lies”.