Authorities arrested 12 suspected members of a prostitution ring that took young Pakistani women to China, part of a growing human trafficking problem often based on fake marriages.
Police made a preliminary judgment that the blast is a "criminal offence" and said that the suspected bomber also died in the explosion.
The nature of the blast is not clear, but an official at the police station in Fengxian county said that the explosion was under investigation.
Savage storm hits China's Jiangsu Province, killing people, flattening power lines and destroying buildings
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