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The los Zetas cartel is founded by a group of Commandos from Mexico's army.
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Decena was killed by members of the Mexican military on November 2002. Heirberto Lazcano takes control.
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Grenade attacks by Los Zetas kills at least 8 people
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Los Zetas break free from their former employer and form their own organization.
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Mexican marines found 72 illegal immigrants dead in Tamaaulipas
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This mass murder by Los Zetas took place in San Fernando, Tamaulipas
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Los Zetas had controll of over 11 states in Mexico
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Mexican Navy confirms that Heriberto Lazcano had been killed in a firefight with the Mexican Marines.
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Mexican Marines captured Miguel Morales