About the religious freedom situation in Xinjiang, she said there are more than 24,400 mosques and eight religious institutes in Xinjiang, which has a Muslim population of over 13 million.
Turkey speaks out: In a statement on Saturday, Turkish Foreign Ministry spokesman Hami Aksoy said it's "no longer a secret" that China has detained more than 1 million Uighurs in "concentration camps".
"We invite Chinese authorities to respect fundamental human rights of the Uighur Turks and shut down concentration camps".
Uighur Muslims supporters and Turkish nationals burn the Chinese flag in front of the Chinese consulate in Istanbul on July 5, 2018.
China's embassy to Turkey said on Sunday that the vocational education program in China's remote northwestern Xinjiang Uygur Autonomous Region is part of the government efforts to combat terrorism and extremism and dismissed as "false" the claims that it had set up a re-education labor camp to purge the area's ethnic minority.
Turkey said China's treatment of Uighurs was "a great embarrassment for humanity", in perhaps the strongest condemnation yet from a Muslim country, which have been conspicuously quiet on the issue possibly to avoid Chinese diplomatic or economic retaliation.
China hit out against Turkey on Monday, saying its statement was "vile", and said mention of Mr Heyit dying in custody was an "absurd lie". The text also requests that UN Secretary General Antonio Guterres "utilize his good offices" to obtain such elections. The groups urged the United Nations Human Rights Council to adopt a resolution establishing an worldwide fact-finding mission to Xinjiang.
Former detainees have recounted human-rights abuses inside the facilities, such as torture, drugging, and rape. Beijing has erected detentions centres covering more than two million square metres to force its Muslim Uighur minority to pledge their allegiance to the Chinese state.
Naidoo said China must be held accountable for its repressive actions.
The Amnesty International in September 2018 reported deaths and torture of Muslims in these so-called re-education camps, alleging the mass detention centres were places of "brainwashing, torture and punishment" and people who would commit a simple act of messaging family overseas were being detained.
His detention was considered indicative of China's determination to crack down on Uyghur intellectuals and cultural figures, which some say are attempts at cultural cleansing. Kenneth Roth, executive director of Human Rights Watch, said he agrees. "We are now looking to the HRC to act - and get to the truth".