Accused Boston Marathon bomber Dzhokhar Tsarnaev ¡°wanted to punish America¡± when he killed three people and injured 264 with a pair of homemade bombs at the 2013 race, a federal prosecutor said on Monday.

In closing arguments before a jury decides whether Tsarnaev, 21, is guilty of the April 15, 2013, bombing and of fatally shooting a police officer three days later, Assistant U.S. Attorney Aloke Chakravarty described the attack as deliberate and extremist.

¡°The defendant thought that his values were more important than the people around him. He wanted to awake the mujahedeen, the holy warriors,¡± Chakravarty said. ¡°He wanted to terrorize this country. He wanted to punish America for what it was doing to his people.¡±