BEIJING (REUTER) - Chinese authorities have sealed off a town in northwestern Xinjiang and paramilitary police were patrolling the streets after at least 10 people were killed in a separatist Moslem riot last week, residents said on Tuesday. Authorities closed the airport and railway station on Thursday and clamped an after-dark curfew on the mainly Moslem town, local residents said. At least 10 people were killed, including one police officer, and some 100 wounded when 1,000 Moslem separatists of the Uighur ethnic minority rampaged through Yining on Wednesday to protest against Beijing rule, Chinese sources and residents have said. The riot was among the most violent for many years in the restive region of Xinjiang, where Turkic-speaking Uighurs are in the majority and ethnic Han Chinese make up 38 percent of the population. Police arrested several suspects and were hunting other rioters, one resident said. Officials tried to play down the riot, describing it as a small incident fuelled by "foreign hostile forces". They refused to say how many people were killed or wounded. Yining is 50 km (30 miles) from the border with Kazakhstan, where many exiled Uighur separatists live. Rioters attacked Han on sight, smashed cars and set fire to shops. Police fired teargas to dispel the crowd. The demonstrators, shouting anti-Chinese slogans, had marched on a government building, one official said. The riot erupted after a Uighur criminal suspect resisted arrest by Chinese police, a Chinese source said. Xinjiang authorities last year stepped up a crackdown on separatists and underground religious activity after a series of violent clashes, bombings and assassination attempts on officials and Moslem leaders regarded as pro-Beijing.