Nineteen jailed terrorists are due for release from custody in Australia in the next five years.
The latest annual report by the Australian Federal Police noted there were 55 people serving jail time for terrorism offences.
The AFP monitors what are known as "high-risk terrorism offenders" - people who have served their sentence but are assessed as posing an unacceptable risk of future terrorist conduct.
The report revealed the agency was monitoring four control orders and two offenders were arrested over the past financial year for breach of their orders, with one sent back to jail for just over two years.
The AFP said 16 people had been charged during 2021/22 as a result of terrorism investigations by the agency and its international partners.
Over the year, the first right-wing extremist was charged under terrorism laws, which the AFP said "reinforces the message that the AFP targets all criminality regardless of the ideology of the perpetrator".
"The AFP and our partners have seen an increase in the number of ideologically motivated violent extremism investigations, which primarily align to nationalist and racist threat drivers," the report said.
The agency noted growing concerns about the potential terrorism threat from the use of drones around airports, which drove the AFP to deploy its own drones in Brisbane, Cairns, the Gold Coast and Darwin airports.
In a separate report, terrorism finance watchdog AUSTRAC said its work had helped an unnamed law enforcement agency uncover a large inventory of weapons and other harmful items, and track online white supremacists.
As well, over the past financial year AUSTRAC worked with regional partners on a joint operation targeting a high-risk charity suspected of supporting terrorism financing.
AUSTRAC expressed concern about the growth of digital currencies which were increasingly being used for money laundering, terrorism financing and ransomware.
