BEIJING -- China's top auditing body has said it spotted about 9,400 clues on alleged serious malpractices and transferred them to judicial departments in the past five years.

The clues were collected through auditing about 700,000 enterprises or organizations, and auditors retrieved about 800 billion yuan (128.41 billion U.S. dollars) in possible losses, according to the National Audit Office (NAO).

The NAO has been following up with the implementation of the central government's key policies in the past five years, said the NAO head Liu Jiayi.

During the period, auditors stepped up efforts to check funds earmarked for improving people's livelihood, environmental protection and resource energy development, Liu said.