The Enforcement Directorate has sought reports of all the RBI audits conducted at the Punjab National Bank, as inquiries revealed that the first Letter of Undertaking was issued to the Nirav Modi group in March 2011. The ED is trying to find out how the fraud continued for six years. The ED searched properties of Nirav Modi, Mehul Choksi and the PNB at 39 locations on Monday. ED teams seized assets worth ₹22 crore, bringing the value of seized property to ₹5,716 crore.