The NSW corruption watchdog has swooped on the offices of an embattled western Sydney council, seizing computers and storage devices, the ABC understands.

The ABC has been told three Independent Commission Against Corruption (ICAC) officers searched Liverpool Council Mayor Ned Mannoun's office yesterday morning, taking a laptop, computer, and several USB sticks.

A short time later, the ICAC officers were seen searching Cr Mannoun's car outside his home.

Cr Mannoun was also a candidate for the seat of Werriwa in this year's federal election.

Interim chief executive of Liverpool Council Michael Cullen did not comment on the matter today.

"Issues in relation to ICAC matters are confidential," Mr Cullen said.

"We can not comment on whether ICAC is or is not investigating."

The ICAC itself has also refused to comment on whether it is investigating either the council or its mayor.

This is the latest in a series of incidents involving Liverpool Council.

Liverpool Council CEO Carl Wulff left his role at council after a row over asbestos. ( Fairfax Media: Jeff de Pasquale )

Former chief executive Carl Wulff succumbed to pressure to resign in March, amid allegations he misled the public about asbestos contamination in the area.

The ABC revealed the NSW Environment Protection Authority is investigating several sites possibly affected by contaminated landfill, which could have come from the council's soil storage facility.

The NSW Government has also launched a review into a fiery council meeting in February after allegations several councillors were threatened and intimidated by the Mayor's supporters while trying to dismiss Mr Wulff.

About 20 police were called to the meeting and escorted the councillors to their cars.

Cr Mannoun denied hearing any threats made to councillors.

The council then banned Cr Mannoun from speaking on its behalf at a meeting in March, voting to remove him as its spokesman, scrap his message in the monthly newsletter, replace his column in the local newspaper and remove his photo from council invitations and publications.