Two men have been detained for allegedly tweeting rumours of purported shootouts and other drug violence in Mexico, and authorities say they plan to file terrorism charges against the pair.
The rumours of attacks by the Zetas drug cartel prompted parents to rush to schools looking for their children in the state's biggest city, also known as Veracruz, and in the neighbouring city of Boca del Rio.
The panic snarled streets with chaotic traffic.
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