2017 Queanbeyan stabbing attacks
On 6–7 April 2017, two teenage boys aged 15 and 16 went on a rampage in Queanbeyan, New South Wales, Australia, first stabbing a service station attendant to death, then violently attacking four people in a spree that continued for several hours. The attacks were investigated by Australia's Joint Counter-Terrorism Task Force as a possible terrorism-related crime.
Source: Wikipedia — 2017 Queanbeyan stabbing attacks (CC BY-SA 4.0)