A police officer crosses a street as he keeps watch on tourists at Times Square in New York April 21, 2013. Dzhokhar Tsarnaev, the surviving suspect in the Boston Marathon bombings, remained in serious condition in the hospital on Sunday, unable to speak due to injuries to his neck and tongue sustained while on the run from police, officials said.. REUTERS/Eduardo Munoz (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)