Another official from Datong, one of the country's largest coal mining centers, has been placed under investigation, pushing the city into the middle of Shanxi's anti-graft storm.

According to The Paper, a political news platform based in Shanghai, quoting an anonymous source, Xue Kai, the deputy head of Datong's public security bureau and former head of its traffic police branch, was taken away by Datong commission for disciplinary inspection a few days ago.

Xue had participated in many big projects in Datong, including the city's largest urban road reconstruction around 2008 and a crackdown on hit-and-run cases around 2012.