Sly of the Underworld has played a secret police tape that has been hidden for more than 20 years, in relation to the gangland wars involving Carl Williams and more.

The veteran crime reporter went back to October 25, 2003 to tell Ross and Russ the full story.

“We’ve got a bombshell,” Sly said on 3AW Breakfast.

Press PLAY to hear the interesting full story (and the secret police tape)

Images: 3AW, iStock