China is detaining its Uighur Muslim citizens for reasons including being younger than 40 years old or appearing untrustworthy, leaked documents show.

On Wednesday, Human Rights Watch published details of a dataset showing the reasons why approximately 2,000 people were detained in Aksu prefecture, Xinjiang, between mid-2016 and late 2018.

Human Rights Watch said that the list appears to come from a part of Aksu that is mostly Uighur, and the group said it is confident that all the people on the list are Uighurs.