An Australian father is appealing for the federal government to repatriate his son, daughter-in-law and two grandchildren from Syria.
Jahangir Alam's son Mahir left Melbourne to join Islamic State in 2014.
The 26-year-old is in a Kurdish-run prison after being captured by the Syrian Democratic Forces earlier this year, and may face trial.
Asked about the case by journalists, Foreign Minister Affairs Marise Payne avoided talking about his fate.