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Police patrols aided with sniffer dogs are seen at Beijing's metro stations. Police would make more frequent inspections and cross-question suspicious passengers. Beijing beefed up security in the city's metro on March 30, while Shanghai reported preparations for the World Expo meant thousands of police were already safeguarding its underground. [CFP]
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![Police patrols aided with sniffer dogs are seen at Beijing's metro stations. Police would make more frequent inspections and cross-question suspicious passengers. Beijing beefed up security in the city's metro on March 30, while Shanghai reported preparations for the World Expo meant thousands of police were already safeguarding its underground. [CFP]](../../attachement/jpg/site1007/20100331/0019b93bd68d0d1cfc0501.jpg "Police patrols aided with sniffer dogs are seen at Beijing's metro stations. Police would make more frequent inspections and cross-question suspicious passengers. Beijing beefed up security in the city's metro on March 30, while Shanghai reported preparations for the World Expo meant thousands of police were already safeguarding its underground. [CFP]")
