CBI arrests PNB office assistant, private individual in ₹10.24 crore fraud case involving unauthorized withdrawals from customer accounts. New Delhi: The Central Bureau of Investigation (CBI) has arrested a Punjab National Bank (PNB) office assistant and a private individual in connection with an alleged fraud involving unauthorised withdrawals of ₹10.24 crore from customer accounts at the bank’s Sector Pi branch in Greater Noida, Uttar Pradesh.