China is using the case of ousted politician Bo Xilai as a triumphant example of the Communist Party's effort to rein in rampant corruption that threatens its hold on power.

The party's top official for discipline, He Guoqiang, gave a speech Monday in which he cited the investigation into Bo as one of the recent successes of the party's efforts to uncover "major disciplinary violations."

Bo was one of China's best known politicians until he fell from grace earlier this year when a close aide exposed a murder scandal involving Bo's wife.

The party expelled Bo on Sept. 29 and accused him of charges ranging from corruption to illicit sexual affairs as it tried to sweep away a scandal that had threatened to overshadow an upcoming leadership transition.