Australian police say they have arrested a man on suspicion of terrorism-related offences following raids in six Melbourne suburbs.
The identity of the man, detained on Wednesday, has not been revealed.
Police said the 23-year-old was expected to be charged with ''collecting or making documents likely to facilitate terrorist acts''.
Firearms, computers and a USB stick with ''violent extremist materials'' were also seized in the raids.
The raids were part of ongoing counter-terrorism investigations, the Australian Federal Police (AFP) and Victoria state police said in a statement.
"I would like to reassure people that we have not identified any immediate threats that pose immediate concerns to the safety of the community," said Victoria Police Assistant Commissioner for Crime Steve Fontana.
Investigations were still ongoing, he said.
The series of raids took place in suburbs in southwest Melbourne. The al-Furqan Islamic centre and bookstore in the area were the focus of the raids, local media reported.
On Thursday morning, the suspect was taken to hospital for medical treatment for abdominal pains.