Blasts ripped through a restaurant in north China's Shanxi Province Wednesday night, killing two people and injuring over 150 others.
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At least 12 others were severely wounded, safety watchdog in the city of Shuozhou said.
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The explosion of natural gas pipes was suspected to be the cause of the accident after an initial investigation.
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The city has established special groups for rescue, medical treatment and investigation work.
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Among the 155 injured, dozens are fire fighters as they were at the scene when the final blow occurred.
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Three trucks of local fire-fighting brigade were damaged, according to a Xinhua report at site.
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Witnesses said they heard the explosions around 9:20 p.m., and they also smelled gas.
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The two-story building housing the restaurant showed signs of having caught fire, and glass of nearby buildings was scattered on the streets.