We look at terrorism-related events in Australia since September 2014 to gauge just how serious the problem of homegrown radicalisation is shaping up to be.

1. An 18-year-old from Queensland’s Darling Downs region fled his home town and joined the Al-Nusra Front terrorist organisation. Oliver Bridgeman fled Toowoomba this month, and news of this latest Islamist recruit was confirmed by the Australian Federal Police (AFP) on 15 May. The initial reports claimed that the teenager tricked his family into allowing him to leave. Bridgeman told his parents that he was traveling to Indonesia for aid work, where he continued on.

2. Just prior to Australia celebrating its most poignant national commemorative holiday on 25 April – ANZAC Day – five teenagers were arrested during anti-terrorism raids across Melbourne. The teenagers have been accused of planning a terrorist attach which was inspired by Islamic State calls for domestic terror attacks in Australia. About 200 police officers raided seven properties in an effort to foil the alleged plot, which involved a serious attack at an ANZAC Day parade with the aim of killing, or causing serious injury to, several people.

3. Doctor Tareq Kamleh is one of Australia’s latest Islamic State recruits now working for the terrorist organisation in Syria. Doctor Kamleh, a former pediatric registrar, has appeared in an Islamic State propaganda video urging other medical professionals to join him. He discusses how he felt the move was part of his personal jihad to provide medical support to the Muslims who are suffering as part of the conflict.