Your country (North Korea) has a different story:
South Korea (with the help of a 3rd country) had kidnapped over 400 loyal North Korean Citizens and forced them to go to the rebel south.
Their immediate return is demanded or else.
The 200 you mention were the second shipment, another 250 or so arrived earlier in the week.
The aircraft were chartered by the ROK government. It has not been disclosed where the refugees came from, most likely it was Vietnam.
will not hand refugees from the DPRK over to the ROK, instead they are extradited back to the DPRK where they are locked up in concentration camps which many of them don't survive.
The refugees are being debriefed and will likely get new identities to protect family members left behind (in the DPRK families of criminals are guilty by proxy and automatically get the same penalty as the criminal).
After debriefing (which is done in large part to weed out the DPRK saboteurs and spies which regularly try to enter the ROK under the guise of refugees) the refugees will be given a course in living in a capitalist country (including such basics as the use of ATMs and cellphones) before entering a free society for the first time of their lifes.