Four armed miscreants had looted the money from the Mahuabagh branch of Bank Of Baroda under Rupaspur Police Station here, a statement by the office of the Director General of Police said.
Locals caught one of the miscreants, identified as Jitendra Pandit, red handed and cut off his left hand, it said.
Police later seized Rs one lakh from his possession and sent him to Patna Medical College and Hospital.
Raids were on to net the three others, the statement said.