Sexual assault against women and children is a social problem worldwide. Studies say that over-responsiveness to sexual stimuli by heterosexual rapists may be the etiology for rapes on women. Developments in the field of neuroimaging technologies, Diffusion tensor imaging (DTI) studies and Fractional anisotropy has led to the improved studies of the brain areas involved in commission of such crimes. Research also revealed that in antisocial offenders the neural circuitry that is accountable for moral decision-making such as medial prefrontal cortex, amygdala, angular gyrus, the posterior cingulate showed abnormalities. It is high-time that the upsurge of understanding the details of the neurobiological origin of sexual offences and sexual crimes are studied.