A Queensland teenager who converted to Islam and travelled to Syria has again denied joining a terrorist organisation and has posted a video of himself teaching kids rugby league.

Oliver Bridgeman, 18, left his home town of Toowoomba in March, leaving the country under the guise of doing aid work in Indonesia.

He reportedly joined the Al Nusra Front, the official Syrian affiliate of Al Qaeda, and several Islamist factions.

Nine Network's 60 Minutes tracked Mr Bridgeman down to a refuge camp in rebel-held territory near Aleppo in Syria's north.

He said he had been there for three months doing aid work and before that was in central Syria where he was distributing aid and rebuilding huts in refugee camps.

"I have a good relationship with different rebel factions purely because of my safety," he said.

"For me to travel across Syria, I need people to protect me from being kidnapped or something like that.

"I'm not part of Al Qaeda, I've never joined a rebel group. I'm an aid worker.

"I always wanted to have a hands-on approach, [to] do my bit to ease suffering.

"I don't think I betrayed my country. I still love Australia. It is still my home.

"I'm here to help people. I'm sacrificing my comforts at home to be here."

Mr Bridgeman set up a Facebook page a few days ago, saying it was needed to counter media reports which were "blowing everything out of proportion" and "writing blatant lies".

Even though Syria is in the middle of a civil war, the teenager said he had never feared for his life or safety.

A video was posted last night, showing Mr Bridgeman teaching Syrian children how to play rugby league.

"I wanted to get them away from some of the horrors that they have," he said in the clip.

"They obviously enjoy it.

"A lot of them are orphans and suffer from post-traumatic stress or have a lot of difficult social skills."

The Australian Federal Police warned anyone who fought illegally with militia groups in areas like Syria and Iraq faced life imprisonment upon their return to Australia.

"The AFP and Australian Government agencies have, for a number of years, strongly and consistently discouraged Australians from travelling to conflict zones such as Syria and Iraq to participate in hostile activities," a spokesman said.