They have been held in North Korea. We don't know if they're still alive. The situation is considered to be one of urgency, to determine if they're alive and their whereabouts and to bring about their release.
Because of this ongoing arbitrary situation they've been in prison in that notorious camp you spoke about, the Kwan-li-so, in North Korea. There is witness testimony to the effect that they have been held there, brutally tortured and imprisoned, and they may not be alive.
It's calling on our government to try to ascertain if they are indeed still alive and to secure their release from that brutal torture and imprisonment.