Prime Minister Scott Morrison says an Australian woman who reportedly left the country to join I-S will face the full force of the law if she returns home.
The woman is believed to be Zehra Duman from Melbourne.
She's presently at a refugee camp in north-eastern Syria, and says she wants to come home because her baby is sick.
Mr Morrison says he won't put any Australians in danger by helping extremists who want to return to Australia from the Middle East.
He says those who made such a decision in the first place deserve to face the consequences.
