In a statement, the Australian Foreign Ministry (DFAT) confirmed that the Australians Mark Firkin and Jolie King were being held in Iran.
On Thursday, a source noted that the couple was arrested in July for allegedly taking illegal photos with a drone.
In a statement by DFAT on Thursday, the couple's families said they wanted to "bring the couple home safely" as soon as possible. "DFAT provides consular assistance to the couple's families.
In a statement, a DFAT spokeswoman asked Australian citizens and holders of dual citizenship with Australia to travel or travel through Iran to follow the government's latest travel advice.
The UK Foreign Office would not do the ABC report confirm, however, said in a statement that British Foreign Minister D ominic Raab met with the Iranian ambassador on Wednesday and "expressed serious concerns about the number of citizens detained by Iran and their detention conditions".
The detentions are taking place amidst tensions between Iran and the United States and its allies, including Australia and the United Kingdom.
Washington has since the decision of US President Donald Trump to abandon the Iranian nuclear deal in 2018 seeks to use the pressure he calls "maximum pressure" to change Iran's behavior and limit its nuclear ambitions.
The beginning of this year came The tensions between the US and Iran rose to a level that sparked fears over the war, and oil prices rose as investors feared that oil tanker attacks could disrupt broadcasts on the Strait of Hormuz, which passes Iran and is the most important place on the Planet for global oil supply is.
Australia and the United Kingdom are also in tensions Last month, Australia agreed to launch a maritime security mission on the Strait of Hormuz with the United States and the United Kingdom Alistair Burt described the detentions as "hostage taking" during an interview with Radio 4 of the BBC.
"The policy of effective hostage-taking, and so on it makes it very difficult for those who want a different relationship with Iran to take the lead with those who look at it. It is incessantly hostile, "Burt added.
During an interview with Sky News on Wednesday, UK Secretary of Commerce Andrea Leadsom added that reports of detention were "extremely worrying".
CNN's Matt Egan and Hilary McGann have contributed to this report.