Gabriel Crazzi, 34, was arrested at Logan, south of Brisbane, on Thursday at the same time his alleged accomplice Ahmed Talib, 31, was taken into custody in Melbourne.

Federal police say up to seven people may have been involved in the southeast Queensland-based group that formed networks in Australia, Turkey and Syria used by Australian terrorist fighters to enter Syria.

Once there, Australian fighters joined terrorist organisations, including Jabhat al-Nusra, also know as al-Qaeda in Syria, and engaged in hostile activities.

AFP counter-terrorism commander Stephen Dametto alleged the man arrested in Queensland organised fighters’ trips to Syria, but also went there to fight himself.

“We will be alleging he entered Syria, fought alongside terrorist organisations, and he did that against the Syrian government. That’s an offence that carries 20 years (jail),” he told reporters on Friday.

The man arrested in Melbourne will be extradited to Queensland.

Dametto said both men are accused of preparing for a foreign incursion, which carries a 10-year jail term.

The man arrested in Victoria has also been “designated by the US government in regards to financial sanctions by their Department of Treasury for material support to al-Qaeda”, Dametto said.

The AFP commander said there was no immediate threat to Australia, and the national terror alert level remains unchanged at probable.

He would not rule out further arrests, but said some of the seven suspects were overseas.

Police seized $80,000 in cash and high-value gemstones during Thursday’s raids.