Who are the Uyghurs and why is China being accused of genocide?
China has been accused of committing crimes against humanity and possibly genocide against the Uyghur population and other mostly-Muslim ethnic groups in the north-western region of Xinjiang.
Human rights groups believe China has detained more than one million Uyghurs against their will over the past few years in a large network of what the state calls "re-education camps", and sentenced hundreds of thousands to prison terms.
There is also evidence that Uyghurs are being used as forced labour and of women being forcibly sterilised. Some former camp detainees have also alleged they were tortured and sexually abused.
The US is among several countries to have accused China of committing genocide in Xinjiang. The leading human rights groups Amnesty and Human Rights Watch have published reports accusing China of crimes against humanity.
China denies all allegations of human rights abuses in Xinjiang, claiming its system of "re-education" camps are there to combat separatism and Islamist militancy in the region.