Now Zhou Yongkang’s brother is detained following hint that net is closing on former security tsar

A brother of China’s former internal security chief Zhou Yongkang has been detained by investigators, state-controlled media reported on Monday, after a government spokesman declined to deny the retired political heavyweight was under investigation.

Zhou Yuanqing and his businesswoman wife Zhou Lingying were taken away from their home in Wuxi in the eastern province of Jiangsu on December 1 by “discipline investigators from Beijing”, the Beijing News said.

The husband is a brother of Zhou Yongkang, according to the report, who amassed huge power during his time as China’s security chief and retired as a member of the Communist Party’s all-powerful Politburo Standing Committee (PSC) in late 2012.

The wife was a major investor in a multi-million-dollar Audi dealership and her success “had a lot to do” with Zhou Yongkang’s son Zhou Bin, the newspaper added.

She was also involved in a liquefied natural gas station partnership with a company affiliated to state-owned China National Petroleum Corporation, the oil giant once headed by the politician.

Rumours have been circulating for months that Zhou Yongkang is being investigated for corruption.

At least six high-ranking officials believed to have been his proteges have fallen since the once-in-a-decade power transition that anointed Xi Jinping as the ruling party’s general secretary.