Chinese officials asked Western countries to cancel a conference scheduled this week to discuss the ongoing mistreatment of ethnic minorities in China's Xinjiang region.
More than one million Uyghurs and members of other Turkic minority groups in Western China are being forcibly sterilized and made to do forced labor, rights groups allege.
China "urges the co-sponsors to immediately cancel this event which interferes in China's internal affairs, and calls on other (United Nations) Member States to reject the event," national representatives said in a statement released Monday.
The Wednesday video conference, co-organized by charity group Human Rights Watch, will hear U.N. ambassadors from the United States, Germany and Britain speak on behalf of China's repressed Uyghur population.
China's treatment of its Uyghur ethnic minority population is "genocide," according to the United States.
"The US claims to care about the human rights of Muslim people despite the world-known fact that the US has been killing Muslims in Afghanistan, Iraq and Syria," the Chinese government said in response.
"It is the US and its followers that have killed the largest number of Muslims in the world."
The event is a creation of "sheer lies and political bias," the Chinese ambassador to the U.N. said in a statement urging other countries not to participate.
"The current situation in Xinjiang is at its best in history with stability, rapid economic development and harmonious coexistence among people of all ethnic groups," he added.
However, human rights groups around the world disagree. First hand testimony, paired with satellite images of labor camps and detention sites, suggest hundreds of thousands of Muslims in China live under constant surveillance and control.
These issues and more will be the focus of Wednesday's conference.