Two terror groups listed

Parliament's powerful intelligence and security committee has approved the continued listing of Islamic State as a terrorist organisation.

The listing, made under the Criminal Code, means it's an offence for anyone in Australia to help the organisation, which committee chairman Dan Tehan described on Monday as "one of the world's deadliest".

Islamic State has been listed under a variety of names since 2005.

The committee's report said it proclaimed itself Islamic State in June and the relisting supports its continued proscription under its new name.

The committee also approved the listing, for the first time, of the Nigerian-based terrorist organisation Boko Haram, which grabbed worldwide attention when it kidnapped more than 200 schoolgirls in April.

The committee said Boko Haram, unlike Islamic State, had no known links with Australia.