Teen brothers stopped at Sydney Airport suspected of trying to join Islamic State in Syria

Two teenage brothers intercepted by authorities at Sydney Airport were suspected of trying to head to Syria to join Islamic State (IS) fighters.

Federal Police said the boys aged 16 and 17 were detained on Friday on suspicion of attempting to prepare for incursions into foreign countries for the purpose of engaging in hostile activities.

They said the Sydney brothers were “subsequently unarrested and released into their parents’ custody” and would not comment further because investigations were “ongoing”.

But sources have told the ABC their luggage contained extremist paraphernalia and a letter on how to fabricate a cover story to authorities when leaving the country.