Tokyo prosecutors raided the head office of Daiwa Securities Co. on Sept. 18 to search for evidence of payoffs allegedly made by the major securities firm to corporate extortionist Ryuichi Koike, a “sokaiya” central to similar scandals involving Nomura Securities Co. and Dai-Ichi Kangyo Bank.

The Securities and Exchange Surveillance Commission and the Tokyo District Public Prosecutor’s Office suspect that Daiwa paid 54-year-old Koike more than 67 million yen by mid-1996, which constitutes a violation of the Commercial Code and the Securities and Exchange Law, sources said.

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