Activists called for U.N. member states to pressure China this week to account for alleged human rights violations, including the suspected mass detention of 1 million Muslim Uighurs in far-western Xinjiang province.
China's record will be examined by the U.N. Human Rights Council on Tuesday, the first time since 2013, in a regular review expected to focus on its treatment of ethnic minorities, especially Uighurs and Tibetans.
China says Xinjiang faces a threat from Islamist militants and separatists. It rejects all accusations of mistreatment in an area where hundreds have been killed in unrest between Uighurs and members of the ethnic Han Chinese majority.