A penalty of ₹ 1.8 crore has been imposed on Punjab National Bank (PNB) by the Reserve Bank of India (RBI), while ICICI Bank has been fined ₹ 30 lakh for deficiencies in regulatory compliances.According to a statement issued by the central bank, PNB was found guilty of contravening provisions of the Banking Regulation Act, 1949, related to pledge of shares by it.