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Photo by: Dmitriy Dvorsky

People assist an injured person after an explosion in Dnipropetrovsk, Ukraine, Friday, April 27, 2012. Officials say four blasts within minutes have rocked the center of the eastern Ukrainian city of Dnipropetrovsk, injuring dozens of people, including schoolchildren, in what prosecutors believed was a terrorist attack. (AP Photo/Dmitriy Dvorsky)

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