After hours of speculation, according to the Middlesex District Attorney’s office, one suspect wanted in connection with the Boston Marathon bombings is dead after a shootout with police officers. A police officer was transported to Mount Auburn Hospital and is currently in critical condition. The other suspect, described as the man wearing a white hat in surveillance videos, is still at large and is the subject of a massive manhunt. Boston Police Commissioner Ed Davis told reporters early Friday morning, “We believe this to be a terrorist. We believe this is a man who’s come here to kill people.” He also warned residents not to venture out of their houses.