Negotiators
Engineer J.A. Manusama, then president of the RMS, and Rev. Metiarij acted as negotiators during the crisis.
Because of some disease in the school (probably caused by the food distributed in the school), the hijackers decided to release the children, but keep the teachers. According to medical doctor Frans Tutuhatunewa (later successor of RMS president), there was no health issue with the hostages in the train. Nevertheless the health conditions of these hostages were used as an argument for the later attack on the train.
Read more about this topic: 1977 Dutch Train Hostage Crisis