Boy caught in terror sting known to police

One of two teenagers arrested near a western Sydney prayer hall by counter terrorism officers was reportedly known to police for refusing to stand at school during the national anthem.

The 16-year-olds were arrested in Bankstown on Wednesday afternoon, with police seizing two knives, reportedly similar to bayonets, before taking the boys in for questioning.

It's believed the pair had planned to launch an attack soon.

At least one has come to the attention of authorities previously for refusing to stand for the Australian national athem while a student at East Hill Boys High School.

The ABC reports that when he was questioned over the incident he said he only stood for God and spoke about overseas military action by Australian troops.

Police wouldn't provide details of the operation but have said there is no on-going threat.