Fresh warnings have been issued about youth radicalisation after the wives of previous Islamic State fighters arrived back in Australia.
"More people being radicalised, more quickly," Home Affairs counter-terrorism co-ordinator Brendan Dowling told a federal budget hearing on Wednesday
He said states and territories were likely to need more funding to educate young people who were sympathetic to radical ideals.
Home Affairs does not provide specific funding support in relation to individuals despite a request being made by the NSW government ahead of the return of so-called "ISIS brides" to Australia.
No arrests have so far been made following the arrival of a second group linked to the Islamic State on Tuesday.
The women travelled from a refugee camp in northern Syria for families of killed or detained Islamic State militants. Their devices were seized and inspected on arrival.
