Regional authorities in China revised a local law to encourage the existence of "re-education centers" for its persecuted Uighur ethnic minority.

The new law promulgated by the government in Xinjiang, western China, formally encouraged officials to set up "re-education institutions ... to carry out the educational transformation of those affected by extremism."

Beijing previously denied that such centers even existed, claiming that it only set up vocational training centers to help those affected by religious extremism.

Human Rights Watch said that "without due process," those centers "remain arbitrary and abusive, and no tweaks in national or regional rules can change that."

Chinese regional authorities have legally formalized the existence of re-education centers for the country's persecuted Muslim Uighur ethnic minority after Beijing denied that such camps existed.

Officials in Xinjiang, the western Chinese region where 11 million Uighurs live, revised a local law to encourage "re-education institutions" to help those "affected by extremism."

The new law, which was published on Tuesday, stated: "Officials at or above the county level may set up vocational education and training centers, and other re-education institutions and management departments, to carry out the educational transformation of those affected by extremism."

Beijing justifies its surveillance and crackdown on Uighurs as a measure to counter terrorism and religious extremism. It has also repeatedly insisted that people in Xinjiang — known to Uighurs as East Turkestan — lived in harmony and enjoy religious freedom.

Chinese national flags are hung prominently in a passage in Kashgar, Xinjiang. AP Photo/Ng Han Guan

China previously denied that such camps existed. Shortly after a United Nations panel said it had received credible reports that 1 million Uighurs were held in internment camps, senior Communist Party official Hu Lianhe claimed that there are "no such things as re-education centers," but that the country had detained people it considers extremists.

Earlier this month Radio Free Asia this week quoted unnamed regional authorities as saying they had to transfer inmates out of Xinjiang to other regions across China because, one said, "we are experiencing an overflow of inmates."

See more: Photos show huge expansion of Chinese facility where Muslim minorities say they are persecuted and forced to sing hymns to Xi Jinping

A police officer checks a Uighur man's ID documents in Kashgar, Xinjiang, in March 2017. Thomas Peter/Reuters

Is this law legitimate?

Rights activists claim that Xinjiang's local government have no right to legalize re-education camps because the process itself is still "arbitrary and abusive."

Maya Wang, the senior researcher on China at Human Rights Watch, said in a statement sent to Business Insider:

“Xinjiang's regional government is not empowered under China's constitution to legalize detention in the political education centers where a million Turkic Muslims are being held.

"Without due process, Xinjiang's political education centers remain arbitrary and abusive, and no tweaks in national or regional rules can change that."

Uighurs who have been inside detention and re-education camps have described witnessing and experiencing physical and psychological torture, including being shackled to a chair and beaten up, deprived of sleep, and forced to sing about President Xi Jinping to get food.

Former Xinjiang detainee Omir Bekali demonstrates how he was strung up by his arms in Chinese detention before being sent to another internment camp during an interview in Almaty, Kazakhstan, in March 2018. AP Photo/Ng Han Guan

China has also justified its method of "training" religious extremists as "the necessary way to deal with Islamic or religious extremism."

Last month a spokesman for China's state council information office, Li Xiaojun, said that detaining Uighurs in such centers was "not mistreatment," but "to establish professional training centers, educational centers."

"If you do not say it's the best way, maybe it's the necessary way to deal with Islamic or religious extremism," Li said, according to Reuters. "Because the West has failed in doing so, in dealing with religious Islamic extremism."

"Look at Belgium, look at Paris, look at some other European countries," he added, referring to terrorist attacks in Brussels and Paris carried out by Islamic extremists in 2015 and 2016. "You have failed."