On the Australia 's most mediated gun violence-related incident since Port Arthur , was the 2014 Sydney Hostage Crisis . On 15 – 16 December 2014 , a lone gunman , Man Haron Monis , held hostage 17 customers and employees of a Lindt chocolate café . The perpetrator was on bail at the time , and had previously been convicted of a range of offences
2014 Sydney Hostage Crisis
2014 Sydney hostage crisis
Gun violence