An Australian lawyer working in Mongolia for a company controlled by Rio Tinto is facing a corruption investigation.
Sarah Armstrong had her passport taken away after being detained at the airport in the capital, Ulaanbaatar.
The 32-year-old has been questioned by anti-corruption officials in relation to activities at a coal mine in the country’s south.
As chief legal counsel to SouthGobi Resources, she has been asked about any knowledge she has of bribery and tax evasion. But some in her company, which is ultimately controlled by Rio Tinto, say Ms Armstrong is being harassed in the form of payback for corruption allegations she made earlier regarding Mongolian officials.
She is not in custody but cannot leave Mongolia.