Pranab Kumar Roy, UBI General Manager, had allegedly violated norms, abused his official position and caused a loss of Rs 9.44 crore to the bank in one case.
This was in connection with granting a loan of Rs 20 crore to a private company for its ethanol turnkey project, a CBI's Anti Corruption Branch release here said.
Roy is also allegedly involved in many other bank fraud cases in different places.
These are being investigated by CBI branches at Chennai and Bangalore.
He was produced before a CBI court and remanded to judicial custody.
