He said the estimates were based on eyewitness accounts of the violence.
China has said that 156 people were killed in clashes in Urumqi on Sunday. Over a thousand people were injured.
Authorities said Wednesday that the situation was now "under control" after thousands of troops entered the city in a bid to prevent further unrest.
Beijing has blamed exiled Uighur leader Rebiya Kadeer for instigating the violence, which she strongly denies.
Xinjiang's eight million Uighurs make up nearly half the population of the region, a vast area of deserts and mountains rich in natural resources that borders Central Asia.
The Turkic-speaking people have long complained of repression and discrimination under Chinese rule, but Beijing insists it has brought economic prosperity to the region.
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China has said that 156 people were killed in clashes in Urumqi on Sunday. Over a thousand people were injured.
Authorities said Wednesday that the situation was now "under control" after thousands of troops entered the city in a bid to prevent further unrest.
Beijing has blamed exiled Uighur leader Rebiya Kadeer for instigating the violence, which she strongly denies.
Xinjiang's eight million Uighurs make up nearly half the population of the region, a vast area of deserts and mountains rich in natural resources that borders Central Asia.
The Turkic-speaking people have long complained of repression and discrimination under Chinese rule, but Beijing insists it has brought economic prosperity to the region.
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