Counter terrorism police conducted raids on homes in Lakemba, Wiley Park, Punchbowl and in the city at Surry Hills ahead of detaining four men over an alleged bomb plot.
FOUR men remain in custody after counter terrorism raids on homes in Lakemba, Wiley Park, Punchbowl and in the city at Surry Hills on Saturday night.
Australian Federal Police Commissioner Andrew Colvin said the raids followed intelligence of a plot to commit a terrorist attack on the aviation industry.
"In recent days, law enforcement has become aware of information that suggested some people in Sydney were planning to commit a terrorist attack using an improvised device," he said.
Wearing gas masks and ballistic armour, backed by firefighters and paramedics, officers from the Joint Counter Terrorism Team, stormed homes in Sproule Street, Lakemba, Renown Avenue, Wiley Park, Victoria Road and Craig Street Punchbowl, and a terrace on Goodlet Lane, Surry Hills on Saturday evening, arresting the men.
Prime Minister Malcolm Turnbull confirmed the raids were in connection to an Islamic extremist terrorist plot and security at airports had been tightened as a result of the intelligence.
"Travellers should be prepared for additional scrutiny at screening points, and while it is important that Australians are aware of the increased threat, be assured we have the finest security and intelligence services in the world and they are working, as is my government, and all our governments around Australia, night and day, to keep Australians safe," Mr Turnbull said.
Travellers have been advised to arrive at terminals at least two hours before flights and to limit the amount of carry-on and checked baggage to help ensure security screening remains efficient.
At the time of going to print, the men remained in custody and had not been charged.