New Delhi, March 5: Amid attacks from the Congress over the Rs. 12,600-crore PNB scam, the BJP on Monday accused former Fince Minister P. Chidambaram of aiding jewellers Mehul Choksi and Nirav Modi — main accused in the multi-crore bank fraud case — through an 80:20 gold import scheme. The Bharatiya Jata Party BJP) also targeted Congress chief Rahul Gandhi and sought answers from him on the issue.