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The apparent mass abduction purportedly happened sometime between 10 a.m. and noon on Sunday morning just off the Paseo de la Reforma, the city's main boulevard, near the Angel of Independence monument and only about 1½ blocks from the U.S. Embassy.

The incident was the second recent high-publicity blemish for the city's largely unregulated entertainment scene, coming 20 days after the grandson of American civil rights activist Malcolm X was beaten to death at another tough bar in the downtown area.

11 vanish from Mexico City bar in suspected kidnap