The bribery trial of another high-ranking security official, a former aide to ex-security chief Zhou Yongkang, opened on Wednesday, the latest in a series of graft trials and sentencings ahead of a key Communist Party of China meeting this month.

Li Dongsheng, former vice-minister of public security, went on trial on Wednesday in Tianjin for allegedly accepting huge bribes, according to Tianjin authorities.

Li, 60, was charged with accepting bribes valued at 21.98 million yuan ($3.5 million), according to Tianjin People's Procuratorate No 2.