Yang Xiutao, mayor of Hongjiang City in Hunan Province, was placed under "shuanggui" for涉嫌 serious disciplinary violations.
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Shuanggui Hongjiang City Hunan Yang Xiutao Mayor
Note: "Shuanggui" is a form of investigation within the Chinese Communist Party where officials are detained for questioning without access to legal representation. It's a sensitive topic and the term is unique to China's political and legal system. The word "涉嫌" means "suspected of" or "accused of", but it implies the charges are yet to be proven.