CNN confirms Addel Basset al-Megrahi, the only person convicted in connection with the Lockerbie bombing, has died. CNN's Nic Robertson, Senators Barbara Boxer and Kay Bayley Hutchison weigh in.

Sen. Boxer on whether justice has been done in the Lockerbie case: "I don't believe so. ... I have listened to the families. They feel some type of closure, but they also believe that there are more leads that have to be followed. And one thing we know about our country, we'll come after you. So we need to keep on searching. We really do."