The Central Bureau of Investigation, CBI today raided the residence of an IDBI bank manager in Lucknow in connection with a fraud in attaining a loan worth 2.5 crore rupees from Bank of Maharashtra.The raids were conducted at Allahabad, Nasik and Lucknow residences of bank manager Rishib Kumar Mehrotra. According to CBI spokesperson the raids were carried out after the CBI registered a case against the official a few days ago.