Stronger anti-graft teamwork is good for China and the United States, observers said, following a US media report on Sunday questioning "Fox Hunt", China's global manhunt for corrupt officials and economic criminal suspects.

The New York Times story quoted unnamed US officials as saying that some Chinese law-enforcement staff are "operating secretly" in the US to pressure prominent expatriates to return home, and "most likely are entering on tourist or trade visas".

One source close to the Ministry of Public Security told China Daily that the ministry is strict about police officers applying for official visas when they go overseas to hunt for Chinese corrupt officials.