Infrastructure Minister Catherine King is demanding answers from the Western Sydney Airport Corporation about allegations of violence and intimidation on the site were raised by a key contractor, as Industrial Relations Minister Amanda Rishworth orders the Fair Work Commission to investigate.

King insisted at a press conference in Melbourne on Monday that placing the CFMEU into administration last year was “the strongest action we possibly could have taken” after more revelations of organised crime in the construction industry were reported by this masthead and 60 Minutes .

Western Sydney International Airport is involved in a construction sector scandal.

As state and federal authorities scrambled to get answers about the scale of criminal activity on big builds across Australia, unio

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