In China, at least four people were killed on Monday when rioters attacked a police station in western Xinjiang province. The official Xinhua news agency said the rioters attacked the police station in the city of Hotan, taking six people hostage and setting the building on fire. It said additional police converged on the station and shot a number of rioters while freeing the hostages. The agency said one policeman, a security guard and two hostages were killed. Xinjiang in the past has been the scene of violent clashes between ethnic Han Chinese and its native Uighur population. The Chinese government says almost 200 people were killed during ethnic rioting in the region in 2009.