Writer Yahaya Ismail and publisher Usaha Teguh Sdn Bhd were named as defendants.
The 11am reports, among others questioned the political motive behind the publication of the 194-page book which was distributed to some Umno delegates merely a week before the party's general election on 24-28 March.
"It was slanderous... very slanderous, based on what people said. There was no proof whatsoever to support what he wrote in the book. Almost everything was recycled allegations," KJ told reporters waiting outside the police station about 75 minutes later with his supporters.
It was learnt that Yahaya went to see KJ at his office in Damansara on February 19, asking the Pemuda vice chief to 'pay him RM100,000 or the book would be published'.
"Yes, he came to see me asking money. I didnt give him any. This is political distortion and blackmail," he said.