Gokulnath Shetty, then deputy manager (now retired), Manoj Kharat, a single window operator of PNB, and Hemant Bhat were taken into custody by the agency in connection with its FIR registered on January 31 against Modi, his companies and uncle Mehul Choski, they said.
The FIR has listed eight fraudulent transactions worth over Rs 280 crore but based on further complaints from the bank the CBI now says the amount investigated in the first FIR is over Rs 6,498 crore, involving 150 Letters of Understanding allegedly fraudulently issued by Shetty and Kharat.
All these LOUs were issued or renewed during 2017-18, the officials said.