I've just had a bit of a look around the net and the links that have this I found, seem to be somewhat dubious. I'll wait for your links though American Idiot.
Nothing has come out in Australia about this at all to date and we have plenty of media hounds here who'd be more than willing to risk their reputations on for something like this.
All I've found is that he is 'believed' to have fathered a daughter here. I hope for her sake that if this is in fact true, that she's left in peace. What a horrifying thought knowing that this monster could have been her father.