As a second step, a controlled randomized clinical trial will be carried out. Local psychologists will be trained in applying Narrative Exposure Therapy and Interpersonal Psychotherapy. Genocide survivors that will be identified with a PTSD diagnosis will randomly be assigned to either the treatment condition or a waiting list. The treatment group will receive 5 individual sessions of NET in addition to 3 individual IPT sessions. Subsequent 3-months and 6-months post-tests will serve to evaluate the efficacy of this treatment module in alleviating trauma related symptoms and symptoms of prolonged grief. We expect a significant symptom reduction in the experimental group and no significant symptom reduction in the waiting list. After the 6-months post-test, the trained psychologists will train other psychologists in applying this treatment module under the supervision of clinical experts from the University of Konstanz. Afterwards, they will apply therapy to the victims from the waiting list.