Cognitive Behavioral Therapy (CBT) is a critical rehabilitation component for teens who involved in sexual offences. CBT restructures their reasoning capacity to control their anti-social behaviour. An in-depth qualitative study was conducted in one of the state's institutions for girls to investigate the practice of CBT. Ten pregnant out of wedlock teens who were participate in the therapeutic rehabilitation programme were interviewed thoroughly about the practice of CBT. The study found that the practice of CBT in the programme focused only on the religious activities, tend to focus on the vocational programme, the absence of knowledge enhancement programme, no therapy expert to conduct the CBT procedure, and the absence of any set of protocol treatment for therapy. The findings then encourages the study to recommend few interventions that can enhance the implementation of the CBT practice for teens who involved with sex offence.