when an appointing authority comes to know that an employee had submitted a false/fake certificate and other fake details, it has to initiate action to remove or dismiss such an employee from service and stop benefits pension as per the provisions of relevant service rules.You can inform to concern authority with evidence. 

You can file a complaint against him before the higher officials and they will take necessary action.

You must have unimpeachable information about this person otherwise you may face charges. Give it to the banking ombudsman or the CMD of the bank.

His job can be suspended his retired benefits can be cancelled and all the money can be recovered from him. Along with the same he can be behind the bars for cheating and forgery under various sections of IPC

Hello,

You can directly file a complaint to the RBI and also to the enforcement directorate.

Regards

1) complain to MD of bank regarding fake age certificate of retired employee 

2) enclose documentary evidence in your possession about fake certificate 

On basis of your complaint bank would call upon ex employee to furnish evidence of his actual date of birth 

2) birth certificate , school leaving certificate would reflect his actual date of birth 

1. You can file a Police FIR, requesting investigation and charge-sheet, for offences like Cheating, Intimidation, Fraud, Breach of Trust etc.... against the person, supported with all relevant supporting Documents & Witnesses.

2. IF the Police does not take action, THEN you can file private criminal case u/s 156(3) Cr.P.C., in the local Magistrates court, seeking directions to the Police to investigate and file charge sheet.

3. ALSO, make a written complaint with documentary evidences to the "vigilance dept", of such Bank and the Anti Corruption Bureau.  This will set the action wheel in motion.

Do you have any document to prove his actual age ? Medical examination not permitted just to prove your allegations neither at his age bone test has any reflecting result.

1. You can just send a complaint to higher management against that officer for providing false documents to get wrongful gains from job. 

2. No you cannot challenge them for medical examination for faking the age you must produce some documentary evidence by which original age can be proved.

Collect the evidences of his fraudulent activity i.e., for having submitted fake date of birth certificate or  false proof of birth.

Compile the details of all the benefits he availed due to this difference in the fake age to that of the original age (proof of original date of birth to be submitted);

Prepare a detailed complaint about this and send it to the vigilance department of concerned bank with a copy to the CMD of the bank including a copy to the secretary, Ministry of finance requesting to initiate proper legal action against the fraudulent person who defrauded the bank and causing loss to exchequer.

You must disclose your identity with the details of your relationship, if any with him in order to get an effective action against him as per law.

you can write to the Chairman cum managing director of the bank with a copy to the vigilance department of the bank.