seeing similar to the unabomber in the united states. finally, shannon, anybody interested in criminal psychology, the manifest something on certainly has a lot of material to deal with it looks like it's record breaking stuff as well. not the kind you want to look at in terms of massacre by a single person. if, indeed, he was acting alone that would be a new record. shannon? >> just devastating, greg burke with the latest. thank you. the u.s. has invited a top north korean official to new york the country's nuclear program. in a written statement. secretary of state hillary clinton called the trip, quote, an exploratory meeting. a team of u.s. officials will meet with north korean foreign minutester kim qui and explore the possibility of disarmament. turning now to the 2012