FBI has busted the american israeli world ring after a good work by FBI another international ring of organs trafficking was busted Rabbi Issac Rosenbaum is arrested, he was the leader of the ring. he sold livers, $160,000 for one liver I think more cooperation betwwen nations and interpolls and FBI should be signed to catch criminals; also another ring were arrested in Romania hospital last month.
Egypt busts organ trafficking ring... Egypt arrests 'organ trafficking ring' Tue, 06 Dec 2016 - Egypt arrests 25 people, including doctors and nurses, accused of illegal organ trafficking.
Timely thread, OP. For disappearance cases such as Brittanee Drexel and Madeleine McCann, we will not rule out DNA trafficking rings.