article_snippet: Dzhokhar Tsarnaev's carried one of the pressure cooker bombs on April 15, 2013, and placed Dzhokhar Tsarnaev's near the finish line, CNN)Dzhokhar Tsarnaev's attorney said.
article_snippet: Dzhokhar Tsarnaev's was there when a police officer was killed.
article_snippet: Dzhokhar Tsarnaev's was involved in a shootout with police.
article_snippet: A fourth person, an MIT police officer, was ambushed and killed in A fourth person, an MIT police officer patrol car three days after the bombings as Tsarnaev and A fourth person, an MIT police officer brother, Tamerlan, allegedly ran from police.
article_snippet: Tamerlan Tsarnaev, 26, was killed after a gunbattle with police.