Chinese authorities hint that terrorists with links with al-Qaeda were involved in Xinjiang ethnic clashes that have killed over 150 people in the region, reported Press TV.
Chinese foreign ministry spokesman Qin Gang said the Beijing government has evidence to show that rioters had links with al-Qaida and other similar groups based in some foreign countries.
Qin also added that China expected cooperation from neighboring countries to safeguard peace and stability in the region.
Meanwhile, nine-member Politburo of the Communist Party of China headed by President Hu Jintao on Thursday sought the cooperation of foreign governments "to track down links and people involved in supporting the rioters".
Moreover, the Chinese state media and government have also accused the US-exiled Uighur activist Rebiya Kadeer and her followers of being behind trouble in the regional capital, Urumqi.
The clashes are thought to be the deadliest ethnic unrest to hit the country in decades. Some 1,430 people have been taken into custody by Chinese security forces since the deadly riots began on Sunday.
The massive security arrangements have been made after at least 156 people were killed and 1,000 more were injured when thousands of Muslim Uighurs and Chinese Han clashed in the provincial capital.
The protests were sparked over last month's deaths of Uighur factory workers during a brawl in southern China. The eight million Uighurs in Xinjiang accuse the Chinese government of discrimination and repression. The government, however, denies the charges.
China has long blamed the Western governments for interference in its domestic affairs.
China believes that elements supported by the US and its allies are trying to sabotage China's growth and prosperity.