Xinhua News Agency did not give any details about the hijacking in a brief report Sunday.
A man on duty at the government office in Urumqi, Xinjiang´s capital, said he had not heard about the hijacking.
The region saw the worst ethnic violence in China in decades last month when deadly rioting in Xinjiang´s capital of Urumqi killed 197 people and injured more than 1,700, according to official count.
The government said the violence was the work of terrorists, separatists and foreign forces as part of a plot to carve up China.
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