AEC investigates fake election signs suggesting independent candidates are Greens members

Zali Steggall claims coordinated attack' shows opponents are going low while electoral commission says posters could be illegal

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The Australian Electoral Commission is investigating after hundreds of fake campaign signs were put up in blue-ribbon Liberal electorates across New South Wales overnight, falsely suggesting independent candidates were members of the Greens.

Independents in Warringah, Mackellar, Hughes and Hume reported their own posters had been ripped down and replaced with near-identical copies bearing Greens branding in the early hours of Friday morning, in what they said was a coordinated" attack.