ISIS associate re-arrested in Sydney after breaching control order, two weeks after release from jail

A man convicted of associating with ISIS terrorists has been re-arrested in Sydney, accused of breaching his Control Order, just two weeks after his release from prison.

The 25-year-old was arrested by specialist terror officers from the Australian Federal Police in the northern Sydney suburb of Denistone this morning.

The AFP allege the man accessed material online that supported the carrying out of executions, beheadings and torture.

He has been charged with three counts of breaching his Federal Court of Australia Control Order - an offence that comes with a maximum penalty of five years in prison.

Control Orders are part of national security legislation designed to prevent terrorist attacks by placing strict conditions and monitoring on convicted terrorists or those who have engaged in hostile activity overseas.

The man was released on January 1, under a court order set to remain in place until December 30.

"The man has an extremist ideology aligned to the ISIS terror network," the AFP's Acting Commander of Enduring Risk Investigations Alex Nicholson said.

"We will allege the man failed to comply with a condition of his control order by accessing material online that supported the carrying out of executions, beheading and torture, less than two weeks since his release from jail."

The man was denied bail in court today.

The AFP's High Risk Terrorist Offender are responsible for monitoring those subject to Control Orders.

Anyone with information about extremist activity or possible threats to the community should call the National Security Hotline on 1800 123 400.