Iranian players' gesture ahead of an Asian Cup tournament match in Australia last week was widely seen as an act of defiance against the Islamic republic.

Five players escaped the team hotel on Australia's Gold Coast overnight, holing up in a "safe location" while lodging their claims for asylum, Burke said.

"They were moved to a safe location by Australian police. I signed off last night on their applications for humanitarian visas," he told reporters.

"They are welcome to stay in Australia, and they are safe here, and should feel at home here."

US President Donald Trump earlier said he had spoken with Australian Prime Minister Anthony Albanese to confirm the women were safe.

"I just spoke to Prime Minister Anthony Albanese, of Australia, concerning the Iranian National Women's Soccer Team. He's on it! Five have already been taken care of," Trump said Monday on his Truth Social network, less than two hours after an initial post urging Australia to take them in.

Trump added that "some, however, feel they must go back because they are worried about the safety of their families, including threats to those family members if they don't return."

The Australian broadcaster ABC reported that five players evaded the team's handlers at their accommodation in the Gold Coast.

Asked about their case on Sunday, Foreign Minister Penny Wong said Australia "stands in solidarity" with the people of Iran.

The son of Iran's late shah, US-based Reza Pahlavi, warned on Monday that the refusal to sing the anthem could have "dire consequences", and urged Australia to offer the team protection.

Pahlavi, who has not returned to Iran since before the 1979 Islamic revolution that ousted the monarchy, has billed himself as the man to lead a democratic transition to a secular Iran as the theocratic regime fights to survive.

Politicians, human rights activists and even "Harry Potter" author J.K. Rowling have also called for the team to be offered official protection.

"Please, protect these young women," Rowling said in a post on social media.

- 'Save our girls' -

A presenter on Iranian state TV had branded the players "wartime traitors" after they stood motionless during the anthem before their match against South Korea.

In subsequent games, the players saluted and sang.

Crowds gathered outside the Gold Coast stadium where the side played their last match over the weekend, banging drums and shouting "regime change for Iran".

They then surrounded the Iranian team bus, chanting "let them go" and "save our girls".

On Monday, an AFP journalist saw members of the team speaking on phones from their hotel room balconies.

Asked about the possibility of asylum, a spokesperson for Australia's Home Affairs department told AFP earlier it "cannot comment on the circumstances of individuals".

Amnesty International campaigner Zaki Haidari said the women faced persecution, or worse, if they were sent home.

"Some of these team members probably have had their families already threatened," Haidari told AFP.

"Them going back... who knows what sort of punishment they will receive?"

Iran's embassy in Australia did not respond to a request for comment.