BBC NEWS | Asia-Pacific | Scores killed in China protests
First Iran, now China. Freedom is indeed on the march, if only it could knock down the wall of tyranny. Thoughts?Violence in China's restive western region of Xinjiang has left at least 140 people dead and more than 800 people injured, state media say.
Several hundred people were arrested after a protest, in the city of Urumqi on Sunday, turned violent.
Beijing says Uighurs went on the rampage but one exiled Uighur leader says police fired on students.
The protest was reportedly prompted by a deadly fight between Uighurs and Han Chinese in southern China last month.
The BBC's Chris Hogg in Shanghai says this is one of the most serious clashes between the authorities and demonstrators in China since Tiananmen Square in 1989.