Source:
BBCThere have been fresh protests in the Chinese province of Xinjiang, where almost 200 people were killed in ethnic violence in July.
A witness told the BBC that as many as 2,000 ethnic Han Chinese had been demonstrating in the capital Urumqi.
A trigger for the protests appears to have been a spate of unexplained stabbings using hypodermic syringes.
Local media said nearly 500 people, the vast majority of them Han, had been stabbed in the past few weeks.
State-run news agency Xinhua said that 15 people had been arrested over the stabbings, and that four of them had already been prosecuted.
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