The Prime Minister will have "blood on his hands" if people are hurt in airport terrorist attacks in Hobart, federal independent MP Andrew Wilkie has warned.

Key points: Former intelligence analyst Andrew Wilkie concerned Hobart Airport "soft target"

Former intelligence analyst Andrew Wilkie concerned Hobart Airport "soft target" Declares PM and his Government must protect Tasmanian airports

Declares PM and his Government must protect Tasmanian airports State Government and police union also demanding return of federal police to Hobart Airport

There are mounting calls for Australian Federal Police (AFP) to return to Hobart Airport after the terrorism raids carried out in Sydney "disrupted" an alleged plot to bring down an aircraft.

Federal police were removed from the Hobart Airport in October 2014, after a $22-million Commonwealth budget cut.

Mr Wilkie, the member for Denison, said the terror investigation in Sydney strengthened the case for the AFP to be returned.

"Here we have people being arrested who are planning to attack aircraft, and we have a capital city airport without a permanent police presence," he said.

"For the Federal Government to insist that Hobart does not need that presence in light of these arrests is just pure and utter madness."

Mr Wilkie feared Tasmania could become a "soft target".

"Competent terrorists will look for high-profile and iconic targets and soft targets, ones that are not adequately protected," he said.

"I am worried [Hobart Airport] is going to be targeted eventually, and people will get hurt."

Mr Wilkie said the Prime Minister needed to act.

"I will warn the Prime Minister that if there is anyone hurt at Hobart Airport because his government has decided to take the AFP away, then the blood will be on his hands and on his Government's hands," he said.

"For the Federal Government to argue that there does not need to be an AFP presence at Hobart airport because it is not an international airport is an inconsistent line of argument.

"Because the very same government in the next breath tells us that the threat in Australia is from home-grown terrorists."

Sorry, this video has expired Malcolm Turnbull released the details of Saturday's anti-terrorism raids in a press conference on Sunday.

Police union labels Government position 'sickening'

In a statement, Tasmania Police said it had taken measures to increase security at the state's principal airports, in response to the counter-terrorism investigation in Sydney.

Tasmania's police union president Pat Allen said the lack of an AFP presence placed an unnecessary strain on the state's police resources.

"Attacks on aviation are the main target, everyone knows that," Mr Allen said.

"The Federal Government knows that. But apparently because we are in Tasmania we don't have the same rights to feel secure as everyone else in Australia.

"It is quite sickening."

Mr Allen said Tasmania Police was already stretched.

"[Increased airport security] means longer response times to get to jobs, it all has a roll-on effect," he said.

State Government wants AFP back

Police Minister Rene Hidding said the State Government would renew calls for an AFP presence at Hobart Airport.

"Our position is that the AFP should not have gone, they should be there now," he said.

Mr Hidding said the Government would contact the Federal Government this week to express its concerns.

"The point will be made verbally and in communications formally, pointing out that we are the only capital city without a federal police presence at its major airport," he said.

State Labor MP Michelle O'Byrne said Tasmanians deserved to feel safe.

"The Prime Minister can't have it both ways," Ms O'Byrne said.

"He can't tell us that we are under an increased security threat and then fail to ensure Tasmania's major airport is secure.

"I would like to see a very swift response to this.

"We would hope to never see anything on Tasmanian soil, but not having an AFP seems to be counter-productive given the intent of the Federal Government."

The Prime Minister's office has been contacted for comment.