The CBI issued the circulars against all the accused on January 31.
The Punjab National Bank detected a 1.77 billion dollars scam in which jeweller Nirav Modi acquired fraudulent letters of undertaking from one of its branches for overseas credit from other Indian lenders.
The PNB has suspended 10 officers involved in this scam and referred the matter to CBI for investigation.
The scam was started in 2011 and was detected in the third week of January this year, after which the PNB officials reported it to the concerned agencies.
Meanwhile, the PNB filed a second complaint with the CBI on February 13.
The CBI had received the complaint from PNB on January 28 and a case was registered in the case on January 31.