The CBI has recovered “important documents” related to the Punjab National Bank (PNB) scam from a small room in a Wadala chawl in Mumbai even as the bank informed the stock exchange that the fraud by Gitanjali Gems was committed on March 2, 2017. Gitanjali’s amount of fraud has now gone up to Rs 6,186.72 crore in the total kitty of Rs 12,600 crore. The rest of the amount is attributed to the Nirav Modi group.

Meanwhile, the CBI on Thursday arrested another Chief Manager, Internal Chief Auditor (retd) Bishnubrata Mishra, who was responsible for concurrent audit for the period 2011-2015 at PNB Brady House branch.

Further, 13 more people were being questioned by CBI, in addition to those, who are in CBI custody.

The Enforcement Directorate (ED), for its part, attached 41 properties, valued at over Rs 1,200 crore, in connection with its money laundering probe in the PNB scam against Gitanjali Gems and its promoter Mehul Choksi. It also examined PNB’s MD and CEO Sunil Mehta at its zonal office in Mumbai on Thursday.

Sources in the CBI said the agency conducted raids at two locations on Wednesday night based on questioning of certain people and recovered important documents related to Letter of Undertakings (LoUs) from a small room in a chawl in Mumbai’s Wadala.

The property is believed to be that of Nirav (not in name of the company).

Unfazed by Nirav Modi’s reluctance to join the probe, the CBI, in a terse letter, “directed” him to approach the Indian mission in the country where he is residing so that immediate arrangement can be made for his travel to India. The agency is also taking cyber experts to trace and locate them. As of now, the agency cannot trace them. It is communicating with Nirav only through email.

In the meantime, the State Bank of India (SBI) has also frozen three accounts of Nirav Modi group companies and shared the information related to those accounts with investigative agencies. These accounts were with the three overseas SBI branches at Dubai, Bahrain and Antwerp, officials said.

Earlier, in a note to stock exchanges, the PNB said that issuance of FLC (Foreign Letters of Credit) is a contingent liability and may fall upon bank in case of non-payment by opener of FLC. “However, the bank has adequate assets/capital to meet any liability which may be crystallised on us as per law of land,” it said. The PNB reiterated that the fraud has already been reported to regulatory authorities. “The announcement made to the Exchanges is about possibility of increase in amount of fraud.”

Regarding bids for the forensic audit, the bank said bid from BDO India LLP was Ll and after negotiations with them, the company had been appointed as Forensic Auditor for five group companies of Nirav Modi on February 2, 2018.

Headquartered in Belgium, Binder Dijker Otte or BDO is an international network of public accounting, tax, consulting and business advisory firms, which deal with professional services under the name of BDO. BDO has member firms in 162 countries.

The bank also clarified through a tweet on Thursday, that the Reserve Bank of India (RBI) had done risk-based supervision of the bank on an annual basis.

“There have been reports in a section of the media that the Reserve Bank of India has not conducted any audit at Punjab National Bank Brady House, Mumbai branch since 2009. It may be clarified that the RBI does risk-based supervision of the bank on annual basis.” the bank said through its twitter handle.

On the other hand, the ED has attached 41 properties, valued at over Rs 1,200 crore, in connection with its money laundering probe in the PNB scam against Gitanjali Gems and its promoter Mehul Choksi. The attached properties include 15 flats and 17 office premises in Mumbai, Hyderabad Gems SEZ in Andhra Pradesh, Shopping Mall in Kolkata, farmhouse in Alibaug and 231 acres of land in Maharashtra and Tamil Nadu.

It also examined Punjab National Bank’s Managing Director and CEO Sunil Mehta at its zonal office in Mumbai on Thursday. The ED had early this week examined state-owned bank’s Executive Director KV Brahmaji Rao to understand how the alleged fraud was detected and other banking procedures.

On Wednesday, a Blue Corner notice was issued against Nirav and his uncle Choksi in connection with the PNB fraud case, an official said. A Blue Corner notice is issued to locate, identify or obtain information on a person of interest in a criminal investigation. It was issued by the Bureau of Immigration against the two. The notice will be valid for a year starting February 22 at all ports of embarkation.