About 40 heavily-armed police stormed a Surry Hills home at 4pm before raiding properties in Lakemba, Punchbowl and Wiley Park in Sydney’s west.

An Islamist cell is accused of planning to bring down a domestic flight with an ‘explosive device’ discovered at the Cleveland Street home, reports Daily Telegraph.

AFP confirmed in a statement that four men were arrested as part of the investigation after they were alerted to the alleged terror plot.

An ‘explosive devicCounter terrorism police (pictured) stormed four Sydney properties and arrested four men including one man (pictured) at Surry Hills after being alerted to an alleged plot to bring down an airplane with a ‘bomb’