While violence in the Russian republic of Dagestan is nothing new, the region's connection to the Boston Marathon bombings has shined a new global spotlight on the long-running conflict. Reports from the capital of Makhachkala on Wednesday say that a bomb went off in a crowded public market, killing at least two children. Russia's RIA Novosti news service says a package was left behind and picked up by a group of teenagers when it exploded. In a separate incident in another town, five policemen were shot by unknown gunmen while sitting in their car. Three of the men were killed.