The charges related to providing false or misleading information and evidence during its investigations into corruption at Wollongong City Council.

The move to pursue the criminal charges against the trio came only days after the Mercury revealed that Mr Oxley has written a book in a bid to clear his name and restore his reputation.

The book, written by former council communications manager Neryl East, will look at Mr Oxley's 20 years at the helm of the council, the tumultuous period leading up to an ICAC raid on the council in 2006, and the devastating personal impact of the ICAC findings that he had engaged in corrupt conduct.

"The charges ICAC is pursuing seem to be related to the inquiry itself," Mr Oxley said.

"There is nothing in the book which makes any reference to the material the charges relates to."

Meanwhile, a copy of the book's front cover has been released on the website of publisher Pan Macmillan Australia.

The book - Named and Shamed: After the Wollongong Corruption Scandal - is described by the publisher as "a story of corruption, greed, politics and the powers of the ICAC".

Last week, Mr Oxley had declined to reveal the book's title until closer to its release date.

He was surprised yesterday to learn the book was already being promoted by the publisher.

Mr Oxley said he had been inundated by support and media interest in his book due to be on shelves by the end of the year.

"It was mostly positive," he said.