New Delhi: In a new twist in the Badaun killings case, the Hyderabad-based Centre for DNA Fingerprinting and Diagnostics (CDFD) has ruled out sexual assault on the teenage girls whose bodies were found hanging from a tree in May. CBI sources said it is crucial information from one of the most reputed government labs which has cleared a lot of doubts about the theory of the cousins being sexually assaulted before being killed and the needle of suspicion is now on the family members.