Three women have been detained after families linked to the self-proclaimed Islamic State (IS) group landed back in Australia after spending around seven years in a northern Syrian refugee camp.A group of four women and their nine children and grandchildren landed at both Sydney and Melbourne airports between 5.30 and 5.45 pm on Thursday night Two women were arrested on arrival into Melbourne and one woman, understood to be travelling with her son, was also arrested in Sydney.AFP Assistant Commissioner Counter Terrorism Stephen Nutt said he expects one of the women will be charged on Friday, while the other two will be charged on Thursday night or on Friday