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The gunman who opened fire on tourists at Mexico's iconic Teotihuacan pyramids carried materials that were apparently related to the 1999 shooting at Columbine High School, authorities said Tuesday, a day after the attack that killed a Canadian woman and left…
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MEXICO CITY (AP) The gunman who opened fire on tourists at Mexico's iconic Teotihuacan pyramids carried materials that were apparently related to the 1999 shooting at Columbine High School, authoriti…