Gao Jinsong, the Party chief in Kunming, Yunnan province, has been placed under investigation for suspected "serious discipline violations", the Party's Central Commission for Discipline Inspection has announced.

The move comes after two of his predecessors were investigated for alleged corruption in the past year, according to a report in the Beijing-based online financial magazine Caixin.

Gao, 52, was appointed Party chief in August after his predecessor, Zhang Tianxin, a provincial-level official, was downgraded to county level for violating the Party's rules, according to the CCDI.