In March， Chinas top anti-graft body an- nounced it was investigating Chen Xu， chief prosecutor of the Shanghai Peoples Procuratorate， but no further details have been revealed.

In February， Ai Baojun， a former Shanghai vice mayor， stood trial on graft charges.

The court has not yet announced a verdict.

Prosecutors alleged he accepted bribes worth more than 43.2 million yuan， either personally or through his family， and took advantage of his positions to embezzle public assets worth more than 7.5 million yuan.