Australian teens arrested for alleged ISIS-inspired attack plot - World - CBC News
The suspects included two 18-year-olds who are alleged to have been preparing an attack at the ANZAC Day ceremony in Melbourne next weekend, Australian Federal Police Acting Deputy Commissioner Neil Gaughan told reporters.

Another 18-year-old was arrested on weapons charges, and two other men, aged 18 and 19, were in custody and assisting police. All the arrests took place in Melbourne.
And there will be more of these. Some successful, some not.
The issue is not to over react with new laws.
More likely to die from a ladder accident than a terror attack.