Cyril Amarchand Mangaldas (CAM), India's Largest Law Firm, Under Scrutiny in the PNB Fraud Case

In what has been dubbed as India's biggest bank fraud, PNB in January alleged that billionaire diamond jeweller Nirav Modi and his uncle had for years fraudulently raised billions of dollars in foreign credit by conspiring with staff at the bank.

In mid-February, Modi's aides packed cartons of documents at one of his diamond firm's offices in Mumbai and sent them to CAM's office nearby, from where police seized them within a week on February 21, a review of the Central Bureau of Investigation's (CBI) court filings and witness testimonies showed.