The Reserve Bank of India on Wednesday imposed Rs1.5 crore penalty each on three public sector banks -- Dena Bank, OBC and Bank of Maharashtra-- for violation of Know Your Customer (KYC) /Anti Money laundering norms. In aggregate, three banks have to pay Rs4.5 crore fine for failing to comply with the guidelines. Besides, the RBI has cautioned eight other banks-- CBI, BOI, P& SB, PNB, State Bank of Bikaner & Jaipur, UCO Bank, Union Bank of India and Vijaya Bank-- to put in place appropriate measures and review them from time to time to ensure strict compliance of KYC requirements in future.