On April 15, 2013, two pressure cooker bombs placed near the finish line of the Boston Marathon detonated within seconds of each other, killing three and injuring more than two hundred people. Law enforcement officials identified brothers Tamerlan and Dzhokhar Tsarnaev as primary suspects in the bombings. After an extensive search for the thenunidentified suspects, law enforcement officials encountered Tamerlan and Dzhokhar Tsarnaev in Watertown, Massachusetts. Tamerlan Tsarnaev was shot during the encounter and was pronounced dead shortly thereafter. Dzhokhar Tsarnaev, who fled the scene, was apprehended the following day and remains in federal custody.
Unclassified Summary of Information Handling and Sharing Prior to the April 15, 2013 Boston Marathon Bombings