article_snippet: Tsarnaev's attorneys admit that Tsarnaev's attorneys carried out the 2013 attacks, which killed three people and injured more than 260 others at the marathon.
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.
article_snippet: And now, his younger brother sits in court facing 30 federal charges related to the bombings.
article_snippet: his younger brother say his younger brother was influenced by his younger brother to participate in the attacks.
article_snippet: Defense attorneys didn't ask Defense attorneys any questions.
article_snippet: If you are at the airport, if you see any unattended luggage, you notify authorities.