An Australian jihadist who reportedly posted a picture of his seven-year-old son holding a severed head on social media has been condemned as a "lunatic" by a Muslim community leader.
The image, published on Monday by News Corp, reportedly came from the Twitter feed of Australian Khaled Sharrouf, who calls himself an Islamic State fighter.
It shows a young boy, reported to be Sharrouf's seven-year-old son, holding the severed head of what is said to be a Syrian government soldier.
News Corp says the photo of the boy, believed to have been raised in Sydney, was posted with the caption: "That's my boy".
Lebanese Muslim Association president Samier Dandan says he is very disturbed by the image, and has distanced the Australian Muslim community from it.
"I stand very far from that concept - this is an act of a lunatic," he said.
"Even if you are saying to me he made his son lift or carry and take a picture with a decapitated head this is something reflective of something we can all agree - this is an act of a lunatic."
Fellow Muslim community member Dr Jamal Rifi says the act has caused more harm to the cause Sharrouf is claiming to fight for.
"I believe what he is doing now is only feeding his own ego and demented attitude towards life," Dr Rifi said.
"Our community is totally upset with him and totally against IS ideology who are [using] propaganda to recruit young Australians into a war that is not their own to fight."
Opposition Leader Bill Shorten says the images are "shocking".
"First of all, I think every Australian was shocked to their core at that dreadful image of the former Australian citizen Kahled Sharrouff and his son and that dreadful image on the front page of The Australian," he said.
"As a parent, I have no idea how you could ever let your child be in that situation. I think that's shocking."
Defence Minister David Johnston, who has not ruled out Australian involvement in military action against the Islamic State, says he is "revolted" by the image, which he called "a shocking misrepresentation of Islam".
"It underscores the importance of the terrorism laws we are seeking to enact," he said.
I stand very far from that concept - this is an act of a lunatic.
Lebanese Muslim Association president Samier Dandan
"I'm very upset about this sort of thing completely colouring our view of Muslims. I think anybody who knows and understands the Muslim community, they are, by far, very peace-loving."
It has been revealed that Sharrouf left Australia on his brother's passport.
"As an Australian also I'm pretty angry that this person was able to get through our passport system under the current Government's watch and go to where he's gone. This is dreadful," Mr Shorten said.
New South Wales Police last month issued warrants seeking the immediate arrest of Sharrouf after he posted photographs online of fellow Sydney fighter, Mohamed Elomar, holding the severed heads of Syrian government soldiers.
Prime Minister Tony Abbott told the ABC's AM program he was shocked by the atrocities reportedly being carried out by the Islamic State in Iraq and Syria.
"We see more and more evidence of just how barbaric this entity is, I believe there are more photographs in the papers today of the kind of hideous atrocities that this group is capable of," he said.