On April 23, a clash in Kashgar city of China's Xinjiang between authorities and assailants broke out and left 21 people dead. 15 polices and other officials were among the dead in Tuesday afternoon's clash. Six are assailants. Eight riot makers were captured alive.

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The news release of Ministry of Foreign Affairs said 10 of those killed on the government side were Uighurs, three were Han, and two were from the Mongolian ethnic group. Two other Uighurs were injured. They considered it as the intentional act of rioting.

Xinjiang, officially called Xinjiang Uyghur Autonomous Region, is an autonomous region of China. Xinjiang borders Russia and many other Central Asia countries.

Tuesday's violence began when three local officials reported a group of suspicious men armed with knives hiding inside a home in Selibuya township outside the city of Kashgar, the local government news release said.