26 June 2013 Last updated at 06:26 GMT Violence in China's Xinjiang 'kills 27'. Riots have killed 27 people in China's restive far western region of Xinjiang, Chinese state media report. The incident happened in Turban prefecture early on Wednesday. Police opened fire after a mob armed with knives attacked police stations and a local government building, Xinhua news agency quoted officials as saying. There are sporadic outbreaks of violence in Xinjiang, where there are rumbling ethnic tensions between Muslim Uighur and Han Chinese communities. Confirming reports from the region is difficult because information is tightly controlled. The incident happened in Turban's remote township of Lukqun, around 200km (120 miles) south-east of the region's capital, Urumqi. The Xinhua news agency report, citing local officials, said rioters stabbed people and set police cars alight. Uighurs are ethnically Turkic Muslims.They make up about 45% of the region's population; 40% are Han Chinese.China re-established control in 1949 after crushing short-lived state of East Turkestan.Since then, large-scale immigration of Han Chinese.Uighurs fear erosion of traditional culture Seventeen people, including nine security personnel and eight civilians, were killed before police shot dead 10 of the rioters, it said. At least three others were injured and were being treated in hospital, it added. The Xinhua report did not provide any information on the ethnicity of those involved in the riot or on what sparked it. In 2009 almost 200 people - mostly Han Chinese - were killed after deadly rioting erupted in Urumqi between the Han Chinese and Uighur communities. In April an incident in the city of Kashgar left 21 people dead. The government said the violence began when "terrorists" were discovered in a building by officials searching for weapons. But local people told the BBC that the violence involved a local family who had a long-standing dispute with officials who had been pressuring the men to shave off their beards and the women to take off their veils. Uighurs make up about 45% of Xinjiang's population, but say an influx of Han Chinese residents has marginalised their traditional culture. Beijing authorities often blame violent incidents in Xinjiang on Uighur extremists seeking autonomy for the region. Uighur activists, meanwhile, accuse Beijing of over-exaggerating the threat to justify heavy-handed rule. BBC News - Violence in China's Xinjiang 'kills 27'