In the event something like this happened and they were compromised.
Their SOP is mass suicide when corner, caught or arrested. Like the man/woman pair of bombers on KAL some years ago, only she apparantly did not bite down hard enough and Bahrain officials could wrestle the cyanide laced tobacco out of her mouth in time...it only left a burn mark.
I would take away any DPRK cigarettes from the crew and have them searched from head to toe, and put in Panamanic prison garb, to prevent any suicides. Eventually one of them will "talk". Some enticement money could see to that. I wonder how savvy Panama is to these "realities". Perhaps somebody should tell them.