China's anti-corruption campaign took another step forward in the People's Liberation Army on Monday, as a second group of 14 formerly high and well-connected officers were placed under investigation, according to an announcement by the military.

The most prominent of the officers is Guo Zhenggang, former deputy political commissar of the Military Command of Zhejiang province, who was promoted to major general in January.

Investigations of the first group of military officers, in 2014, was announced in January and involved 16 individuals.