Any Australian convicted of a terrorism offence will be stripped of their citizenship under proposed changes to terror laws to be introduced to Parliament by the Coalition.

Prime Minister Scott Morrison said he hopes the proposed legislation will be passed through the Parliament within the coming fortnight.

“We will always as a government do everything within our power to keep Australians safe and we will never rest at looking at the things that we can do to make Australians more safe than they are now,” he said.

“We will seek to introduce legislation before the end of 2018 to enable the Minister (for Home Affairs, Peter Dutton) to strip an Australian citizen of their citizenship for anyone who is convicted of a terrorism offence in Australia.

“There will be no condition on the length of sentence, they would only need to be convicted of a terrorist offence.”

Prime Minister Scott Morrison is seeking to legislate changes to terror laws that would strip an Australian of their citizenship if convicted of a terror crime. (9NEWS)

Mr Morrison said the current laws need updating to reflect new threats to the Australian public. (9NEWS)

Under laws introduced in 2015, the current requirement for someone convicted of a terror offence to have their citizenship stripped is that they need to be sentenced to at least six years in prison.

Mr Morrison said, under the proposed changes, that requirement will no longer exist.

“Being an Australian citizen is a privilege. It’s a privilege that carries with it expectations on those who hold it,” he said.

“People who commit acts of terrorism have rejected absolutely everything that this country stands for.

“They’ve rejected the beliefs of this country, the values of this country, they’ve disrespected every other citizen who shares that privilege of citizenship with them.

“We believe the current wording of the law is unrealistic and it needs to reflect what is the genuine threat that has been posed by those who have been engaged in this activity.”

Under the proposed changes, Home Affairs Minister Peter Dutton will also be allowed to assess the dual-citizenship claims of individuals and enact exclusion orders for Australians who travel to overseas conflict zones. (9NEWS)

The Prime Minister also said a third proposed change will focus on the dealing of Australian dual citizens who have travelled to overseas conflict zones.

“We’re determined to deal with those individuals who’ve done this as far away from our shores as possible,” he said.

“We’ll be introducing a scheme - based on a scheme that exists in the United Kingdom - for temporary exclusion orders.

“Those orders will enable the Minister to impose a condition on the control, return and re-entry into our community of Australians who have been in conflict zones like Syria.

“It will enable the Minister for Home Affairs to impose an order for up to two years on Australian citizens of counter-terrorism interests who are located off-shore. It would be a criminal offence for them to return to Australia unless a permit of this nature is provided.”

The announcement comes just days after three men faced a Melbourne court charged with crimes relating to the alleged planning of an ISIS-inspired attack. (Nine)

After returning to Australia following the term of the exclusion order, the person would then also need to abide by safety mitigation requirements such as reporting to police, curfews and technology use reductions.

“These actions we’re taking are designed to ensure that we have the powers that are necessary in the toolkit to ensure that Australian are kept safe, but also its to protect the integrity of Australian citizenship,” Mr Morrison said.

“Terrorists have violated everything about what being an Australian is all about – it’s a crime against our country, not just other citizens and this is something that can’t be tolerated.”

Ertunc Eriklioglu, his brother Samed and Hanifi Halis were all taken into police custody after allegedly making moves to access a high-powered rifle. (AAP)

Home Affairs Minister Peter Dutton also said during today’s press conference the proposed laws will come after nine people linked to terror crimes have been stripped of their citizenship.

"This threat is very real," he said.

"We know that we've now been able to thwart 15 attempted terrorist attacks - seven have gotten through tragically and we have had significant numbers of arrests since 2014 when the threat level was elevated.

"We are finding that many of the individuals of concern are people who have, at some point, had Australian citizenship conferred on them or they have been born here as second- or third-generation members of families that have migrated earlier.

"We are dealing about the issue of Australian citizenship and how we treat those people who have betrayed their country."

Ten days before the arrests, Hassan Shire Ali fatally stabbed a man and injured two others on Melbourne's Bourke Street. (Supplied)

The incident sent shockwaves around the country and has sparked the government response. (Supplied)

The announcement comes just days after two brothers and another man faced a Melbourne court charged with crimes relating to the alleged planning of an ISIS-inspired terror attack.

During early morning raids on Tuesday this week, police swooped on Ertunc Eriklioglu, 30, in Dallas, while his brother Samed, 26, was arrested in Campbellfield. The third suspect, 21-year-old Hanifi Halis, was apprehended following a raid at a Greenvale home.

It is alleged the men had recently made moves to access a high-powered rifle, and had been communicating on an encrypted messaging app similar to WhatsApp.

Authorities said a specific location for the plot was not finalised but the men allegedly wanted to kill "as many people as possible" in a crowded place.