Prosecutors searched the private office of Democratic Party of Japan Secretary General Ichiro Ozawa and the office of his fund management body in Tokyo Wednesday over accounting irregularities.

They also searched the office at the Diet members' building of Tomohiro Ishikawa, a DPJ Lower House member who previously handled clerical work at Rikuzankai, the fund body, as well as the Tokyo head office and the Sendai branch of general contractor Kajima Corp.

Kajima's local office is located in the Miyagi capital, and Ozawa is elected from neighboring Iwate Prefecture.