( CNN ) A second individual has been charged with attempting to carry out an `` ISIS-inspired '' terror plot , Australian police say . Five young men were arrested Saturday in Melbourne , Australia , in what police called a major counterterrorism operation . Two of the teens , 18 and 19 , have been released `` pending further inquiries , '' Australia 's Federal Police said . Sevdet Besim , 18 , was charged with conspiring to commit a terrorist act , and was denied bail Saturday . The person charged Monday is accused of conspiring to commit acts done in preparation for , or planning , terrorist acts . The suspects planned to attack during a major national commemoration in a week , Prime Minister Tony Abbott said Saturday . `` The act that we believe was in preparation involved attacks against police officers , '' he said . There was also a risk to the public , police said . Police said the suspects were targeting a ceremony on Anzac Day ( Australia and New Zealand Army Corps Day ) , which is April 25 and this year is the centennial of the Gallipoli Campaign in World War I. Abbott avoided the term ISIS -- or Islamic State -- to call out those who authorities believed influenced the suspects . He instead referred to the group as the `` Daesh death cult , '' employing the acronym that is transliterated from the group 's name in Arabic . It 's a handle ISIS is known to loathe . Police also distanced the suspects from any ethnic connection . The men `` are individuals acting by themselves . They are not representatives of any religious , cultural or national group , '' Victoria Police Acting Deputy Commissioner Shane Patton said . `` I think the entire Australian community should be concerned about the young age of those particular men , '' Neil Gaughan , acting deputy commissioner of the Australian Federal Police , said . `` And this is an issue not just with law enforcement , but for the broader community . ... We need to get better in relation to identifying young men and woman involved in this type of behavior , at the very early stage . '' CNN 's Ralph Ellis and Ben Brumfield contributed to this report .
A second suspect has been charged with helping plan an ` ` terrorist - inspired '' attack . One year - old suspect has already been arrested , report unknown .