The CBI today filed its supplementary charge sheet against billionaire jeweler Mehul Choksi, his companies under Gitanjali Group in connection with over USD 2 billion scams in the Punjab National Bank. In its charge sheet filed in the CBI special court, Mumbai, the agency has also charged 16 other entities, besides Choksi and his companies, on the charges of criminal conspiracy, cheating, and provisions under the Prevention of Corruption Act.