Timeline: The Boston Marathon Bombing Case

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  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings
  • Dzhokhar Tsarnaev
  • Female DNA Found on Bomb Component
  • Three More Detained in Connection to Bombing Plot
  • Dzhokhar Tsarnaev
  • Boston Marathon Bombings
  • The Bombings
  • Boston Marathon Bombings
  • Boston Marathon Bombings

An Act of Terror

On April 16, President Obama said the FBI would be investigating the bombing as "an act of terror" and vowed to bring the perpetrators to justice. He and First Lady Michelle Obama attended an interfaith prayer service for the victims two days later. (Photo: REUTERS/Kevin Lamarque)