China tightens Web screws after Xinjiang riot

China clamped down on the Internet in the capital of China's northwestern region of Xinjiang on Monday, in the hope of stemming the flow of information about ethnic unrest which left 140 people dead. The government has blamed Sunday's riots in Urumqi -- the deadliest unrest since the 1989 military crackdown on the Tiananmen pro-democracy demonstrations -- on exiled Muslim separatists. Some residents in Urumqi, Xinjiang's regional capital, said they had been told there would be no Internet access for 48 hours.