"However, in our considered opinion, since there has been a change of guard in the CBI, we would continue to repose our faith in the impartiality of the CBI to look into the report prepared by M l Sharma and other relevant documents and conduct an investigation (as an SIT) into the abuse of authority prima facie committed by Ranjit Sinha with a view to scuttle enquiries, investigations and prosecutions being carried out by CBI in coal block allocation cases," it said.