Shinginko Tokyo, the brainchild of Tokyo Gov. Shintaro Ishihara, said Monday it will consider suing its former management team, including ex-Chief Executive Officer Yasumasa Nishi, for allowing over-lenient screening that resulted in billions of yen in losses.

The position was stated in an in-house report unveiled Monday amid deliberations at the Tokyo Metropolitan Assembly on whether to approve Shinginko Tokyo's request for an additional capital injection of ¥40 billion from the Tokyo Metropolitan Government.

"Since we believe the chief executive officer held strong authority over management, that person bears greater responsibility than the others," present CEO Ryuichi Tsushima told a hastily arranged news conference.