When the three approached the security, the men wearing a helmet and a Ku Klux Klan hood were immediately asked to remove their headwear, but there was a moment of hesitation concerning the Muslim veil.
"One of the requirements of coming into parliament house is that the motorcycle helmet is going to have to come off, your headdress is going to have to come off and your burqa... your identity will be checked," the security guard told the group, according to the Sydney Morning Herald.
The man in a KKK hood took it off only to reveal he had a burqa underneath.
"Bit of a loophole, eh?" he asked.
The three men who participated in the stunt - Sergio Redegalli, Nick Folkes and Victor Waterson – are members of protest movement ‘Faceless’, which is generally against the wearing of burqas or niqabs in public places across Australia.
Their Monday action comes in the wake of the Australian government initially ruling that women wearing face veils should be separated from the public in× House, but later scrapping the decision.
READ MORE: Burqa backtrack: Australia PM reverses parliament veil ban after public outcry
The three later spoke to journalists to explain what they were campaigning for.
"It seems that you're allowed to wear a full-faced covering into parliament if you're a Muslim woman, but no other group is allowed to have that same privilege," Sergio Redegalli, who wore the KKK outfit, told reporters, according to ABC.
"No one should be walking up the [parliamentary] forecourt or in [the] public domain hidden from sight," he added.
The men explained they had nothing to do with the Ku Klux Klan, and were only using its paraphernalia to stress their point.
There are supporters of the burqa ban among ruling Coalition MPs - including× Liberal senator Cory Bernardi, who has praised Faceless for the anti-burqa stunt, saying that it demonstrated
"just how ridiculous it is to allow anyone wearing an identity concealing garment into parliament house."
The Australian Christian Lobby’s Queensland director, Wendy Francis, has however criticized the group for staging a “hurtful” action.
“To identify [the KKK] with a Muslim woman is extremely confronting and hurtful,” she said, according to the Guardian.
Currently, women wearing a burqa or niqab are obliged to show their face to the security at the parliament house, but can continue to wear it once inside.