A man in his forties and a woman in her thirties, who allegedly fell sometime between 1am and 6am, were found by a council worker on Tuesday 12 June in Lisbon, reports Daily Mail.
It's understood the couple may have been taking selfies after a phone was found at the bottom of the cliff.
The bodies of the woman in her 30s and the man in his 40s were found on the sand by a beach cleaner on Tuesday morning, Portuguese newspaper Correio de Manha reported.
The spokesperson did not confirm the nature of the incident or say how the woman died.
On Wednesday the Department of Foreign Affairs and Trade confirmed it was providing consular assistance to the family of the Australian, and had been in contact with its British counterpart over the death of the second person.
His mother said yesterday the couple had left Australia in January on a holiday and had attended a friend's wedding in Portugal in recent weeks.
The newspaper reported that Rui Pereira da Terra, a captain with the local naval authority, told broadcaster TVI that authorities believe the pair fell when trying to recover a phone or to take photographs on the wall.
'It seems they dropped their mobile phone and fell down while leaning over to retrieve it'.
The couple have been identified as Michael Kearns, 33, and his 37-year-old partner Louise Benson.
"Owing to our privacy obligations we will not provide further comment". According to AFP it's not the first time tourists have fallen from the wall situated near the Praira dos Pescadores beach. Picture: SuppliedThe large stone wall sits 30m above the popular surf beach.
It is a popular hotpot, with countless tourists uploading their pictures of the enormous wall on Instagram.
The Australian Embassy in Lisbon has been notified of the deaths.