A major terrorist plot has reportedly been averted in Australia. Four Australian men are accused of planning a suicide attack on an army base in Melbourne. More than 400 officers were involved in searching 19 properties in the city during the bust, the BBC reports. The four men are of Somali and Lebanese descent and are accused of involvement with al-Shabab, the insurgent movement in Somalia that is thought to have ties with al Qaeda. An Australian police official said "The men's intention was to actually go into the army barracks and to kill as many soldiers as they could before they themselves were killed." The raid was the product of seven months of surveillance.