Yesterday, the government said his passport would be revoked and "no one, no matter how big, would be spared".
Nirav Modi, his family members and business partner Mehul Choksi are accused of getting billions in credit from banks overseas after using PNB officials in Mumbai to issue fraud guarantees.

Nirav Modi's apartment at JW Marriott's Essex House is a short walk away from his Madison Avenue store
The diamond billionaire left India on January 1 and was last seen in a group photo with Indian business leaders and Prime Minister Narendra Modi in Davos, taken on the sidelines of a summit on January 23.
NDTV accessed his upscale suite on the 36th floor, with a view of the Central Park, on Thursday afternoon. Staff at the apartment said Nirav Modi and his wife were out, only his children were home. "The news is only in India, he is safe in America right?" an employee questioned.
There was much activity at the apartment on Wednesday night, NDTV learnt, when multiple people gathered there around the same time the news of the giant bank scam broke in India. Hotel staff claimed to have seen the 48-year-old Nirav Modi, who is unusually reticent, well into the night. His wife Ami Modi was seen entering and exiting the building frequently during the day.
At the Madison Avenue showroom, employees gave this statement: "This matter has no affiliation, legal or otherwise with Firestar International Limited which is the flagship enterprise of Mr. Nirav Modi."

Nirav Modi, being investigated in PNB scam, is staying at a suite in JW Marriott's Essex House: sources
At the time of publishing this article, NDTV was waiting for a promised call from Nirav Modi's US management. NDTV has also reached out to the Federal Bureau of Investigation, Department of Justice and State Department and is waiting for a response.
Yesterday, Enforcement Directorate officials raided Nirav Modi's home, offices and showrooms in multiple cities and seized gold, diamond and precious stones worth Rs 5,100 crore.
The bank scam was revealed when a consortium of companies related to Nirav Modi asked for fresh guarantees for overseas credit last month. When the bank asked for 100 per cent cash guarantees in exchange for Letters of Understanding, the companies allegedly said they never did that before. On investigating, the bank uncovered Letters of Understanding issued illegally by officials who had since retired. Letters of Understanding are bank guarantees for lenders.
On January 29, the bank complained to the CBI about a Rs. 280-crore fraud, officials said. The investigating agency filed an FIR or formal case two days later, against Nirav Modi, his brother, wife and Mehul Choksi.
Earlier this week, PNB declared that the scam was far bigger and involved a swindle of over Rs 11,300 crore.