Sydney roads closed after 'ISIS-inspired terrorist plot'

Roads surrounding a block of flats in Sydney's south-west remain closed three days after police unraveled an alleged ISIS-inspired terrorist plot. 

Police were spotted redirecting locals around streets within Lakemba as they search the men's residence for evidence. 

Four men have been detained over an alleged conspiracy to bring down a plane from Sydney.

Roads surrounding a block of flats in Sydney's south-west remain closed three days after police unraveled an ISIS-inspired terrorist plot

Police were spotted redirecting locals around streets within Lakemba as they search the men's residence for evidence

Police were spotted redirecting locals around streets within Lakemba as they search the men's residence for evidence

They may have already tried to smuggle a bomb onto an international flight before their arrests, it has been suggested.

The Lebanese-Australian men might have then developed a different plan to get their improvised device onto a domestic flight after the first failed, law enforcement officials told ABC's 7.30.

It comes after it was revealed the men allegedly have clear links to Islamic State figures overseas as well as ties to the aviation industry.

They may have already tried to smuggle a bomb onto an international flight before their arrests

They may have already tried to smuggle a bomb onto an international flight before their arrests

The Lebanese-Australian men might have then developed a different plan to get their improvised device onto a domestic flight after the first failed

The Lebanese-Australian men might have then developed a different plan to get their improvised device onto a domestic flight after the first failed

The men have been named in reports as fathers and sons Khaled and Mahmoud Khayat and Khaled and Abdul Merhi, who are all related through marriage.

They remain behind bars despite not yet being charged following their arrest on Saturday.

Their target was allegedly an Etihad flight from Sydney to Abu Dhabi with up to 500 passengers and crew aboard, the Daily Telegraph reported.  

Khaled Khayat, pictured in a Canterbury-Bankstown Bulldogs jersey, is one of the Lebanese-Australian men who were arrested during Saturday's terror raids in Sydney

Khaled Khayat, pictured in a Canterbury-Bankstown Bulldogs jersey, is one of the Lebanese-Australian men who were arrested during Saturday's terror raids in Sydney

However, authorities have continued refusing to elaborate on the group's plot to 'bring down' a plane and won't confirm if a series of raids in the Sydney suburbs of Surry Hills, Lakemba, Wiley Park and Punchbowl were triggered by intelligence from Britain and the US.

Khaled Khayat's brother is believed to be a senior Islamic State figure while the other two men are related to Ahmed Merhi, who travelled to Syria in 2014 to fight for the jihadist group, the ABC reported on Monday.

Khaled Khayat reportedly has no criminal history and he has been pictured online wearing the jersey of his favourite rugby league team - the Canterbury Bulldogs. 

One of his sons, who has not been arrested, studied aviation management at UNSW and mixes with pilots and airline workers, the Sydney Morning

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