Since Chinese state media released a video appearing to show a prominent Uighur musician alive, despite reports of his death, Uighur Muslims have flooded social media with requests for news of their missing relatives.
On 10 February, the footage released showed a man said to be Abdurehim Heyit stating he was in "good health". The video came after Turkey criticised China's mass detention of Uighurs in its far west, saying it had learned of Mr Heyit's death in a camp.
Questions about the video's authenticity and when it was filmed were raised by some Uighur groups. Now, using the hashtag #MeTooUyghur, relatives of detainees and activists have taken to Twitter and Facebook to ask the Chinese government to prove that their loved ones are still alive.
Up to a million Uighurs and other Muslims are believed to have been detained in detention centres that China says are for vocational training and necessary to fight terrorism.
Alfred tweeted he'd not seen his parents for more than 11 months and wanted China to "show me they are still alive".
China, as u did with singer #Abdrehim heyit, show me my father and my mother ! Its been 15 Month since my mom taken to concentration camp and been 11 month since my father disappeared. Show me they r still alive! #MeTooUyghur#stopconcentrationcamp pic.twitter.com/4lXMAkUsfm
— Alfred_Uyghur (@Alfred_Uyghur) February 11, 2019
End of Twitter post by @Alfred_Uyghur
Uighurs in China's far-western Xinjiang region have come under intense surveillance by the Chinese authorities. Many Uighurs who live outside of China say they haven't spoken to their family members in years.
Babur Jalalidin and his sister, also worried about the wellbeing of their parents, detained since January 2018, also asked China to provide proof of life.
The son of the former editor-in-chief of the official Xinjiang Cultural Journal, Qurban Mamut, appealed for the release of his father, who has been missing since 2017.
"Show my father Kurban Mamut's video too. You've cut our connection for more than a year," Bahram Qurban tweeted.
China’s government, show my father Kurban Mamut’s video too the way you did with #AbdurihimHeyit
You’ve cut our connection for more than one year! I worry about his well-being.#CCPShowVideoOfMyLovedOneToo#MeTooUyghur pic.twitter.com/zemb3JCsEs
— Bahram K. Sintash (@BSintash) February 11, 2019
End of Twitter post by @BSintash
The cousin of 25-year-old professional football player Erpat Ablekrem appealed on Facebook to the Chinese government to free him from "the concentration camp" where, he says, he has been detained since March 2018.
#MeTooUyghur This is my cousin, Erpat Ablekrem, 25 (Born in February 1994), from Ghulja (Nothern city of East…
End of Facebook post by Mukaddes
In Finland, Uighur activist Halmurat Harri asked about the many others who remain missing.
From CCR’s video, we see #AbdurehimHeyt is possibly still alive, but where are millions of others? Where are these #Uyghur intellectuals? #China, show us their videos if they are alive! #MeTooUyghur #MenmuUyghur #FreeUyghur #SaveUyghur pic.twitter.com/mQZWCHp9rM
— Halmurat Harri Uyghur (@HalmuratU) February 12, 2019
End of Twitter post by @HalmuratU
Over the weekend Turkey's foreign ministry issued a statement in response to reports of the death of Abdurehim Heyit. It said detained Uighurs were being subjected to "torture", branded China's policy towards them a "great shame for humanity" and called for the "concentration camps" to be shut down.
China hit back on 11 February, calling Turkey's statement "absurd lies" and "contrary to the facts".
In August 2018, the UN Committee on the Elimination of Racial Discrimination heard that there were credible reports that China was holding a million Uighurs in "counter-extremism centres".
International rights organisations say that Uighurs are held in these internment camps against their will and are not allowed to contact their family members.
China has repeatedly denied the allegations, describing the camps as "vocational training centres".