The Commercial Crime Unit of Police has arrested two staff — secretary of a cooperative bank and an appraiser — for allegedly cheating the bank to the tune of ₹1.64 crore by pledging fake jewellery.Police sources said three staff were allegedly involved in the fraud. From December 2019, till March 2021, they withdrew ₹1.64 crore as jewel loan after pledging fake jewelleryin thename of 29 members of Primary Cooperative Society Bank in Uthiramerur.