A TOOWOOMBA teenager in Syria who is wanted by authorities says he's being targeted by the Australian Government because of his religion.

Oliver Bridgeman is wanted by the Federal Police, who issued an arrest warrant for him in March, days after his passport was cancelled.

In a wide-ranging interview with American journalist Bilal Abdul Kareem in Syria, Mr Bridgeman said he was being targeted because of was a Muslim.

"They believe I've been participating in politically-motivated violence," he said.

"Since I've got here (Syria) I've only been doing aid work."

Mr Bridgeman said the government had not presented evidence to him of any wrongdoing.

He indicated it was hypocritical the government had allowed people with links to proscribed terrorist organisation Kurdistan Workers' Party to return to Australia, but had issued an arrest warrant for him.

"There's a stereotype that everyone in Syria is a terrorist, I have said I'm not a terrorist.

"I believe if I wasn't a Muslim, this wouldn't be the case, I'd be classed as a hero."

When asked if he supported fighters in Syria, Mr Bridgeman said it was a tough question.

He spoke strongly against Syria president Bashar Hafez al-Assad, calling a dictator.

"He has slaughtered over 200,000 people and displaced millions," he said.

"This guy has no mercy at all, he's targeting schools and hospitals deliberately.

"I know his agenda ... he has spies on the ground at rebel sites."

Mr Bridgeman said many of the fighters were around his age, and had seen terrible things like rape and murder.

"I don't blame them, I really don't blame them."

Mr Bridgeman said if the Australian Government was murdering family and friends, he would fight them.

He also explained why he decided to leave the safety of Australia and travel to the war-torn country.

The teenager, who converted to Islam at 16, said he went to Syria after seeing the people of Syria were suffering.

He learnt from Islam about a requirement that Muslims help the poor and needy.

"I saw from the media ... that no-one was helping them.

"We saw horrific images of people in tents in poor conditions, drinking dirty water, starving and skinny.

"I thought to myself I have a duty to these people. I must go over there and do my bit.

"If I don't step up no-one else will and the people will continue to suffer."

When he crossed the border into Syria to begin work for an aid charity he was scared he would be kidnapped or shot. But when he found was a mostly peaceful country.