**Five people have been killed in ethnic unrest in China’s western city of Urumqi this week, officials say.**It was unclear how the deaths happened, but thousands of Han Chinese have been protesting over a unexplained spate of stabbings with syringes.
Riot police used tear gas to disperse angry crowds earlier, and China’s top security official has arrived in Urumqi to try to restore order.
Protesters blame ethnic Uighur Muslims for the stabbings.