Two Australian brothers - aged 16 and 17 – believed to be attempting to travel to conflict zones in the Middle East were stopped at Sydney Airport on Friday by Customs and Border Protection officers.
The teenagers had return tickets to a destination in the Middle East.
Customs and Border Protection Counter Terrorism Unit (CTU) officers determined that they were intending to travel without the knowledge of their parents.
Searches of their luggage further raised suspicions of their intent.
The brothers were later allowed to leave the airport with their parents.
Authorities continue investigating the circumstances surrounding the incident.
The Minister for Immigration and Border Protection, Peter Dutton, said the brothers initially aroused the suspicions of two alert Customs and Border Protection officers and following discussions the officers referred the boys to the Customs and Border Protection CTU.
''What we have here are two teenagers who have been intercepted on their way to a potentially very dangerous situation," Mr Dutton said.
''As a result of this interception, a Sydney family remains together.
''This highlights afresh the need to work within communities and with parents to disrupt attempts to brainwash our young people.
''It is yet another reminder of the need for parents to remain vigilant against this type of threat.
''This event also showcases the critical work of Australian Customs and Border Protection officers operating around the clock at our borders to prevent people travelling in this way," Mr Dutton said.
He said significant legislative changes were being undertaken to strengthen Australia's borders.
The new Foreign Fighters Act allows Customs officers to detain people where the officer has reasonable grounds to suspect that the person is intending to commit a Commonwealth offence or is a threat to national security or the security of a foreign country.
Once detained by a Customs officer an individual or group is made available to the appropriate law enforcement agency as soon as practicable.
The new law plays a crucial role in Australia's defence against foreign fighters, as it prevents individuals from travelling outside of Australia where their intention is to commit acts of violence.
This not only assists in the prevention of terrorist acts offshore, but also prevents these individuals from returning to Australia with greater capacity to carry out terrorist attacks on Australian soil.
Mr Dutton said the Government is committed to fulfilling its most important responsibility - to protect Australia, its people and its interests.
Legislation to establish the Australian Border Force and to collect biometric data at air and seaports has been introduced into Federal Parliament.
Mr Dutton said it was important that the Parliament recognises the need to progress the legislation without delay.