A group of five/six gunmen entered the branch at Matiya Bazar under Lakshmipur police station posing as customers covered their face with mask.
Police said the robbers locked all the bank employees and customers in a room, opened the chest after taking away keys from the employees and looted Rs 8.80 lakh.
They also damaged hard disk of CCTV before fleeing.
An FIR has been lodged in this connection.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)