According to the Australian Broadcasting Corporation, Phillip Galea, 31, has been accused of preparing and planning a terrorist attack and collecting documents to facilitate the attack.
Galea from Melbourne's Braybrook was detained on Saturday during police raids in the state of Victoria.
During the questioning, Galea expressed intention to fight the charges, Sputnik News reported.
In June, Australian police filed charges against a 17-year-old young man in the crime of terrorism over his social media publications and activity. The detainee threatened to organize a mass shooting, like in US Orlando, where nearly 50 people died several months ago.