Parti Bebas Rasuah leader Ezam Mohd Nor defended his decision not to reveal the alleged "six boxes of evidence" of corruption he claimed in 1998 he had in his possession, purportedly showing wrongdoing by high-ranking government officials.

The allegation has dogged him for close to two decades - all through his political career from when he was a PKR politician to a BN senator, and now as founder of a new party created to fight corruption.

"How can I reveal the six boxes? I had only revealed two pages and I ended up in the Kajang prison," said Ezam...