A man from Sydney who was previously convicted as a supporter of Islamic State has been thrown back in jail after allegedly accessing material about beheadings and torture. Radwan Dakkak, 25, was arrested at his Denistone home on Saturday morning by Australian Federal Police for allegedly breaching a court order restricting his activities. He allegedly accessed material online that supported the carrying out of executions, beheadings and torture, AFP Acting Commander Alex Nicholson said. Radwan Dakkak (pictured), 25, was arrested at his Denistone home on Saturday morning by Australian Federal Police '(Dakkak) has an extremist ideology aligned with the ISIS (Islamic State) terror network,' he said.