The Holsworthy Barracks terror plot was an Islamist terrorist plot uncovered in August 2009 targeting Holsworthy Barracks—an Australian Army training area located in the outer south-western Sydney suburb of Holsworthy—with automatic weapons. The perpetrators planned to infiltrate the base and shoot as many army personnel and others as possible until they themselves were killed or captured; but they were arrested before they could carry out their plan. One of the men acquitted in 2009 went on to kill a man and shoot three police officers in June 2017.