AhlulBayt News Agency - Two of Australia's most notorious terrorists have been killed while fighting with ISIS in the Middle East, according to reports.
Authorities believe Mohamed Elomar and Khaled Sharrouf were killed by a drone strike in Mosul, Iraq, in the past week.
Foreign Minister Julie Bishop said verification of Elomar's death was 'probably imminent' but authorities were still seeking to confirm Sharrouf's death.
Sharrouf's wife, Tara Nettleton, is believed to be seeking to return to Sydney from Syria with the couple's children, including a son photographed last year holding a severed head.
Peter Nettleton, Sharrouf's father-in-law, told the Daily Telegraph the reported deaths filled him with joy. 'I was ecstatic when I heard he was dead. It's great news,' he was quoted saying.
Ms Bishop said the return of Sharrouf's family to Australia would only be considered after his death has been confirmed.
'Once those reports have been verified, then we can deal with other circumstances, including the children,' she told the Seven Network.
Elomar and Sharrouf were two of the most wanted Australian men fighting with the extremist group.
The pair achieved notoriety received widespread media coverage after Sharrouf shared an image online of his son holding up a decapitated head with the caption 'that's my boy'.
The head was reportedly that of a Syrian government official. Sharrouf also drew criticism for frequently posting pictures of his sons carrying guns.
Mohamed Elomar, also known as Abu Hafs al Australi, left behind his wife, Fatima, and three children in Sydney when he joined the fighting in Syria and Iraq.
He also appeared in a photo posted to social media holding two severed heads, and became a prominent figure among Australians who had joined ISIS.
It is believed Elomar recently married Sharrouf's 14-year-old daughter. The girl's Twitter profile lists her 'zawji', Arabic for 'husband'.
The pair is also believed to be responsible for executing captured Iraqi soldiers, and for enslaving and raping women in northern Iraq.
Speaking at Parliament House in Canberra last night, Ms Bishop said it is difficult to gain the information required to verify the reports.
'Our security, intelligence and law enforcement agencies will be working to verify these reports, but I stress it's very difficult to gain the information necessary given that it is a war zone,' Ms Bishop said.
'Australians should not be there and again we stress that any Australian thinking of going to Syria or Iraq or to the Middle East to support Daesh, to support this brutal terrorist organisation, should not go.
'It's an offence against Australian law and it's adding to the misery and suffering of the people of Syria and Iraq and they're putting their own lives in danger.'
It was recently revealed Sharrouf managed to fake his way through a Sydney airport check using his brother's passport.
On his journey to become an so-called Islamic State Fighter, Sharrouf fled to the Middle East on December 6, 2013 from Sydney airport at 9.11am.
Documents show he was let through customs despite an officer checking his face twice, the ABC have reported.
Although there were 'significant time pressures that day,' national security expert Clarke Jones said the incident was a mistake and the processes may need to be assessed.
The heavily censored documents showed that it took a mere one minute 40 seconds for Sharrouf's assessment.
A spokesman for Immigration Minister Peter Dutton said the incident has led to new biometric technology such as SmartGates for traveller checks to be introduced.
This comes after the parents of Sharrouf's wife spoke out about reports their daughter and her children are trying to return home after fleeing to Syria.
Tara Nettleton's mother, Karen, pleaded with the Federal Government to help her daughter's family travel safely back to Australia in a statement given to Fairfax Media.
She asked the government to put politics aside to assist them as they were 'young Australians in real danger' and said there had been 'a number of false statements' made about them.
Prime Minister Tony Abbott has insisted the family should not be shown any leniency or mercy.
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