Australians fighting overseas with terror groups could have their children removed from their care, Immigration Minister Peter Dutton has said. His comments came after news emerged that the wife of one Australian Islamic State (IS) militant wanted to return home with their children. But Mr Dutton said such decisions would be made on a case-by-case basis. Proposals announced on Tuesday could see some Australians lose citizenship for supporting terror groups. 'Best interests' Local media have reported that the wife and children of Australian IS fighter Khaled Sharrouf are trying to return to Australia. The family of Sharrouf's wife, Tara Nettleton, is trying to help her and the couple's five children return to Sydney, Fairfax Media reported on Wednesday. Among them is a young son believed to be the boy photographed last year holding the severed head of a Syrian. Asked on Wednesday about news of their return, Mr Dutton said the childrens' mother, Tara Nettleton, could also be charged with terrorist offences. He said the treatment of the children of returning suspects would depend on the circumstances and the ages of the children.