Earlier, the advocate-general Vijay Narayan, appearing for the state said the investigation by DVAC, is in the final stage and most of the incidents connected to the case have taken place in Tamil Nadu. The mere presence of two or more central government officials in the suspect list does not automatically warrant a CBI inquiry, he said and added that said since the case relates largely to state government officials, it should be probed by the DVAC, with cooperation from the CBI and not vice versa.