CANBERRA, Aug 12 (Reuters) - Australia's government has not
been informed of China's arrest of four employees of miner Rio
Tinto
Australian national Stern Hu and three Chinese employees of the Anglo-Australian company are suspected of "using improper means to obtain commercial secrets about our country's steel businesses," the official Xinhua newsagency said, citing prosecutors in Shanghai [ID:nSP508871]. (Reporting by Rob Taylor)