Australia worries about nationals fighting along with terrorists in Middle

The Australian government is closely observing its nationals who are currently fighting together with some radical terrorist groups in Syria and Iraq, worrying they may pose great threat to the national security when they return to the oceanic country.

In an interview with the local ABC radio, Foreign Minister Julie Bishop said Thursday there might be 150 Australians fighting along with rebel groups and she is "deeply concerned" about Australians who support, work or actually are with the extremists.

"We are concerned that Australians are working with them, becoming radicalized, learning the terrorist trade and if they come back to Australia of course it poses a security threat and we 're doing what we can to identify them," she added.

Since the civil war erupted in Syria in 2011, thousands of fighters from Western countries ofMiddle East origin have joined some extremist groups to fight against President Bashar Assad's regime.

Many of them are Australians trained on the battle field and some of them even joined the Islamic State of Iraq and the Levant (ISIL), a radical armed group committing horrifying attacks against civilians in the past two years.

According to recent reports, some Australians also crossed border with ISIL into Iraq and launched wars against the Iraqi government forces.