Witnesses said two cross-country vehicles driving from north to south ploughed into people in the market at 7:50 a.m. Explosives were thrown out of the vehicles.
One of the vehicles exploded in the market.
A business runner in the market told Xinhua he heard a dozen of big bangs.
The open air morning market is located near the Renmin Park in downtown Urumqi. Ambulance and police cars are parking at the entrance of Park North Street leading to the market.
Flames and heavy smoke were seen. The scene has been cordoned off.
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