Extradition — Extradition of nationals — Prohibition of — Extradition from and to third States — Transit facilities granted by national State of extradited person — Ignorance of nationality of such person — Transit facilities withdrawn on discovery of person's nationality — Subsequent request to national State to hand person back to State from which originally extradited — Request made for purpose of accomplishing extradition through territory of State other than person's national State — Whether handing back by national State permissible — The law of Germany.