A high-profile Australian journalist working for Chinese state media was arrested on "national security grounds", China officials said.
Cheng Lei's detention was a new blow to deteriorating relations between the two countries that have seen China warn its citizens of travelling to Australia and vice versa.
In the first comments on CGTN anchor Cheng Lei, held since 14 August, foreign ministry spokesman Zhao Lijian said authorities took "compulsory measures" against her on suspicion "of criminal activity endangering China's national security".
"The case is still in the process of investigation in accordance with the law," Mr Zhao said, adding that her "legal rights and interests are all receiving full legal protection".
CGTN anchor Cheng Lei has been detained in China since August 14. Source: Getty Images
He did not give further details of the allegations against her.
Ms Cheng - who conducted interviews with international CEOs for CGTN's Global Business and BizTalk shows - has not been seen in public since being held, although Australian diplomats in Beijing were able to speak to her on August 27.
Two other Australian reporters , saying they also feared arrest.
"As long as foreign journalists obey the law... they have no reason to worry," foreign ministry spokesman Zhao Lijian said after stating authorities had investigated the Australian pair as part of an unspecified case.
The Australian Financial Review, Smith's employer, reported that both journalists had been told that "they were persons of interest in an investigation into Ms Cheng".
Australian journalists Bill Birtles and Michael Smith arrive back at Sydney Airport. Source: SBS
Ms Cheng is the second high-profile Australian citizen to be detained in Beijing after writer Yang Hengjun was arrested in January 2019 on suspicion of espionage.
Earlier this year, Australia warned its citizens they faced the risk of arbitrary detention if they travelled to China.
