Earlier in a BSE filing, PNB said the amount of unauthorised transactions could go up by more than Rs 1,300 crore.
The Central Bureau of Investigation on Tuesday said that the Punjab National Bank has told the agency that another scam of additional Rs 1,251 crore has been detacted in relation with Gitanjali Gems.
According to the news agency ANI, CBI is now investigating the Rs 12,636 crore scam which involved Nirav and Gitanjali gems.
Meanhile, Usha Ananth, former Managing Director of Punjab National Bank (PNB) has been questioned in Mumbai in connection with the PNB fraud that came under light on February 14.
Two serving general managers had also been called for questioning by the probing agencies. Besides, NS Kannan, executive director of ICICI bank had also been questioned.
Kannan is the leader of consortium of the bank that lent money to Gitanjali Group.
On February 14, the bank had detected the fraud wherein billionaire jeweller Nirav Modi and associates had allegedly acquired fraudulent letters of undertaking (LoUs) from one of the branches of the PNB for overseas credit from other Indian lenders.
Earlier in a BSE filing, PNB said the amount of unauthorised transactions could go up by more than Rs 1,300 crore.
"...We have to inform that quantum of reported unauthorised transactions can increase by USD 204.25 million (approximately)," the filing said.
At the current exchange rate, the amount comes to around Rs 1,323 crore.
The bank also referred to its filing made on February 14 when it first disclosed the fraud and at that time, the "fraudulent and unauthorised transactions" was estimated at USD 1.77 billion (about Rs 11,400 crore).
The scam was perpetrated by way of fraudulent Letters of Undertaking (LoUs) generated in the name of Punjab National Bank.
It has also been reported that the CBI had issued the circulars against around a dozen of their employees, who started moving out of the country fearing arrest for the ill-doings of their employer.
Even before the CBI could find out their roles in the Punjab National Bank (PNB) scam worth Rs 11,300 crore, these employees slowly started moving out of the country. The look out circulars were issued as and when required and the role and name of the employees cropped up during investigation into the case. When their whereabouts were checked and summons were issued to join the probe, it was found that they had been missing and have fled India already.
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 "Scam of additional Rs 1,251 crore detected involving Gitanjali Gems , PNB tells CBI")
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