http://news.chosun.com/site/data/html_dir/2012/04/14/2012041401181.html?news_Head1
Contrary to initial analysis,
(1) The rocket had explosion 80 seconds into flight at the altitude of 50km. It broke in two.
(2) The broken rocket still appeared to fly in one piece, until 2 min 15 sec into flight at which time two pieces started to separate at the altitude of 70.5 km. Initially experts believed that this was the time when the explosion occurred.
(3) In light of this new revelation, experts now believe that it is not the intentional abort or failure in the separation of 1st and 2nd stage boosters, which led to the breakup of the rocket, but the faulty design of 1st stage booster or a fuel leak.
YTN TV news from ROK tonight showing from yesterday: A- DPRK rocket trail upon ascent with high powered tracking optics, and, B- Unha-3 debris splashing down in the ocean. I am certain the ROK Navy and Coast Guard could retrieve debris. Next will come a DPRK underground nuke test, and, perhaps, series of rapid fired Scuds and Nodongs into Sea of Japan toward Japan to show off and ‘change the subject’. Not to mention, further purges over the screw up and international loss is face.