In addition , 37 % of the respondents in Boston and 35 % in Springfield believed Tsarnaev should receive the death penalty . Defense lawyers say it 's impossible to seat an impartial jury in the United States '' . Prosecutors say George O'Toole and his brother planted bombs at 2013 Boston Marathon . Tsarnaev has pleaded not guilty . more than 200 people died and Three were wounded in the attack .
Defense lawyers say it 's impossible to seat an impartial jury in the United States '' . Prosecutors say George O'Toole and his brother planted bombs at 2013 Boston Marathon . Tsarnaev has pleaded not guilty . more than 200 people died and Three were wounded in the attack .