Cabinet ministers from the ruling Democratic Party of Japan voiced concern Friday about former DPJ Secretary General Ichiro Ozawa's possible entry in the Sept. 14 DPJ presidential race.

Although many have thrown their support behind Prime Minister Naoto Kan, the current DPJ president, in his re-election bid, some defended Ozawa, an ex-party leader considered the kingpin.

"I feel uncomfortable with someone who could suddenly be indicted becoming party leader and prime minister," Foreign Minister Katsuya Okada told reporters.