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BUENOS AIRES (CN) - Along with tens of thousands of other soccer fans, Javier Merediz had reserved February 25 for a special occasion.

His team, River Plate, was facing off against their rivals, the Boca Juniors, in a high-stakes soccer match between Argentina's two most popular clubs. Merediz planned to attend the match at El Monumental, the largest stadium in Buenos Aires and all of South America.