Data apparently hacked from Chinese police computers shows officers are ordered to shoot Uyghur Muslim prisoners on sight if they try to escape detention in the western region of Xinjiang. The BBC has been handed documents, including thousands of photographs, that shed light on China's secretive system of mass incarceration in the area.

The BBC's former correspondent to China, John Sudworth uncovered much of what we know about the Uyghurs and spoke to Today’s Justin Webb from New York, having had to leave the country because of his work on the story. The program also heard from Rahima Mahmut, Director of the UK World Uyghur Congress, and Jewher Ilham, whose father, Uyghur has been detained since 2013.

(IMAGE CREDIT: BBC )