Xu Yongsheng is the highest-ranking energy official to be detained since Liu Tienan (pictured) was held last year.

Top National Energy Administration official held in widening graft probe

Sweeping probe into energy sector corruption claims latest high-ranking official after stash of 100 million yuan found at home of subordinate

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Xu Yongsheng is the highest-ranking energy official to be detained since Liu Tienan (pictured) was held last year.
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