BEIJING - A Northwest Airlines flight headed for Beijing was diverted to another Chinese city after a security alert. Authorities questioned the passengers and crew after the jet landed, the U.S. airline said Friday.<br>
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China's official Xinhua News Agency said a threatening note was found aboard the flight from Detroit, but the airline's general manager in China wouldn't confirm the note.<br>
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The Boeing 747-400, with 132 passengers and 18 crew aboard, landed Thursday in Tianjin, a port city southeast of Beijing, said John Watkins, Northwest's vice president and general manager for China.<br>
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Tianjin is about 75 miles from the Chinese capital.<br>
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Watkins cited "security concerns" but wouldn't give any details. He said Chinese authorities interviewed all the passengers and crew, searched all the luggage aboard and inspected the aircraft.<br>
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"Nothing unusual was found," Watkins said.<br>
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The passengers were driven by bus to Beijing, Huang said. <br>
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