The official said the United States had asked China to provide more evidence to help with their investigation.
The Chinese government is in advanced talks with the United States on repatriating five of China's most wanted corruption suspects and will hand over whatever evidence is needed by its U.S. counterparts, the state-run China Daily said on Wednesday.
In April, China published a list of 100 of its most wanted corruption suspects who have been targeted with an Interpol red notice, many living in the United States, Canada and Australia. About 18 have been recovered so far this year.
China's efforts have long been hampered by Western nations that balk at signing extradition deals, partly out of concern about its judicial system.
Rights groups say Chinese authorities use torture and the death penalty is common in corruption cases. This month, a U.N. rights watchdog said torture remained rife in China.
China is currently seeking U.S. judicial help in repatriating the five, four of whom are still at large, to face trial in China, the official China Daily quoted an unnamed official with the graft-fighting Central Commission for Discipline Inspection as saying.
"We are negotiating with our U.S. counterparts on the five major corrupt fugitives, including Yang Xiuzhu, who is suspected of illegal immigration and is in custody awaiting deportation proceedings," said the official.
"And we have decided to conduct joint investigations of the major cases."
Yang has filed for asylum in the United States.
The report did not name the other four suspects.
The official said the United States had asked China to provide more evidence to help with their investigation, the official said.