An Australian jihadist was among a throng of Islamic State supporters in Syria photographed watching a big screen projection of a Jordanian pilot being burned to death.

Social media photos showed the crowd of men gathered before a projector broadcasting the murder of captured Lieutenant Moaz al-Kasasbeh – with Australian-Somalian fighter Yusuf Yusuf reportedly among their ranks.

Australian jihadi and former business student Yusuf Yusuf joined a crowd in Raqqa to watch a public screening of the death of Jordanian pilot Moaz al-Kasasbeh. (Facebook)

"Movie night in the heart of the Khalifa … Burn kafir (non-believer) Burn :)," Yusuf posted to Facebook, according to News Corp .

When asked whether it was acceptable in Islam to burn a man alive, Yusuf replied "punished the kufar like they punishes us … an eye for an eye akhi (brother)."

The 26-year-old recently dropped his business studies in Melbourne to join IS, also known as ISIL, along with male model friend Sharky Jama last year.

Like many other Aussie jihadists in Syria, Yusuf has been outspoken on social media about the IS cause and winning the race to Jannah (paradise).

Yusuf Yusuf, right, pictured with Sharky Jama and two friends in their past life in Australia. (Supplied)

It is understood Jama has since defected from the extremist group although his whereabouts remain unclear.

Jordan has vowed to begin executing death-row Islamic extremists at dawn, in what it's described as an "earth-shattering" response to 26-year-old Lt al-Kasasbeh’s death.

Hours after the video of the gruesome death emerged online, a Jordanian security official said executions would begin at daybreak.

Would-be Iraqi female suicide bomber Sajida al-Rishawi was named as the first to go to the gallows as well as other jihadists including Iraqi al Qaeda operative Ziad Karbuli and others who attacked Jordan's interests.