The Australian embassy in Cairo is investigating reports an Australian man has been killed in crossfire in Syria.
A video on YouTube posted by Syrian rebels hails an Australian man as a martyr for fighting alongside the anti-government Syrian rebels.
The Australian reports the man's name as Melbourne bricklayer Yusuf Toprakkaya.
In a statement on Wednesday, the Department of Foreign Affairs said it was investigating the reports.
"The Australian embassy in Cairo and consular officials in Canberra are making inquiries regarding this matter," the statement said.