Australian counterterrorism police are investigating allegations a 17-year-old student has been teaching extremist Islamic views at a Sydney high school.
The investigation comes after authorities received information regarding religious sermons being held in the playground of Epping Boys' High School.
It is believed the young male 'preacher' has links to Milad bin Ahmad-Shah al-Ahmadzai, the alleged Sydney jihadist currently in custody and awaiting trial.
Al-Ahmadzai was one of the main targets in Australia's biggest-ever counterterrorism raid, Operation Appleby. He is also known to be the brother of former Epping Boys' High student Mayward Osman.
Both police and teaching staff are concerned jihadist ideologies are being pushed within school grounds, and a former principal told a local paper he had heard students joking about having ties to Islamic State.
The New South Wales government told 7 News it is working on developing programs to counter violent extremism across the state.