Mexico, Drug cartel
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Tourists across Mexico are being told to shelter in place
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Drug cartel leader Nemesio Rubén Oseguera Cervantes, commonly known as "El Mencho," was killed in a military operation on Feb. 22.
The U.S. Embassy and Consulates in Mexico issued a security update on Sunday, recommending sheltering in place.
After Southwest and American nixed flights south of the border, the U.S. aviation system has seen thousands of delays and cancellations.