Islamists are celebrating the worst tragedy in Victoria's history.
Terror watchdogs said fundamentalists had blogged on websites across the globe, applauding the lives lost and destruction.
Senior analyst at SITE Intelligence Group Adam Raisman said they were posting pictures of burnt homes and devastated victims and "taking joy in the scenes".
One Islamist wrote: "It would be an act of revenge for Australian's participation in the wars in Afghanistan and Iraq."
Bushfires victims said they were stunned.
"We're minding our own business and trying to cope with all this and they are celebrating our suffering," said Denise McCann who lost her home in the Kinglake blaze.
Regional Islamic Council vice-president Dr Ameer Ali said the comments did not represent the wider Muslim community.
"They have no idea what they are talking about," he said.
More Islamic doing what Islamic do.