Congress president Rahul Gandhi on Tuesday took a dig at Prime Minister Narendra Modi for being quiet on the multi-crore Punjab National Bank (PNB) scam.Rahul, who returned from Italy yesterday, took to his Twitter handle, saying “ek Nirav Modi hai, dusra Modi nirav hai”. The case is related to the over Rs 13,600 crore PNB fraud by diamond jeweller Nirav Modi and his uncle Mehul Choksi, owner of Gitanjali gems.Congress MPs along with party president staged a protest against the PNB scam near Mahatma Gandhi statue in Parliament today. The party even raised the issue inside Parliament during the second half of Budget Session leading to repeated adjournments. Meanwhile, the Lok Sabha was adjourned till 12 noon after members disrupted the House over the scam.Rajay Sabha adjourned too was adjourned for the day following ruckus over the fraud.The Enforcement Directorate (ED) had earlier issued summons to the duo asking them to appear before the central agency. However, Modi, his family, and Choksi left the country in early January, much before the CBI received a complaint from the PNB.