The FBI says a man was seen on video carrying a bag just before the Boston Marathon explosion but CBS News senior correspondent John Miller told the "CBS This Morning" co-hosts that investigators are ... more 
The FBI says a man was seen on video carrying a bag just before the Boston Marathon explosion but CBS News senior correspondent John Miller told the "CBS This Morning" co-hosts that investigators are grappling with just how much information to release publicly. less 
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Thu, Apr 18, 2013 2:19 PM EDT