The Ryongchon Conspiracy

It all makes sense:

Mr. Kim said, “There are about 210 counties in North Korea and I was
reported that flyers describing the details of Ryongchon accident have been
distributed all across the nation,” adding “The purpose of staging this accident
was probably to create a subterfuge for sweeping purge by appealing there was a
force trying to assassinate (Kim Jong Il). I also heard that missile(s) being
exported to Syria was onboard the train and exploded. They blew up the
missile(s) because the production was faulty and they wanted to get rid of it.
Moreover, Ryongchon is near Shinuiju and there is a plan to build a Special
Economic Zone. But ever since Japanese colonial days, this area is traditionally
known for its rebellious tendency. By blowing up the old buildings and
rebuilding new streets, they seemed to have been able to relocate the residents
with problems to other areas with ease.”

http://http://www.backtopyongyang.org/multiple_subversive_groups_in_North_Korea.html

Well, relocation of a rebellious bunch and a huge propaganda wave. It makes perfect sense.