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Greens leader Christine Milne has backed an anti-coal activist whose actions temporarily wiped more than $300 million from the value of Whitehaven Coal, arguing it was part of a "long and proud history" of civil disobedience.Jonathan Moylan issued a fake ANZ media release on Monday claiming the bank had pulled a $1.2 billion loan from Whitehaven's Maules Creek project on environmental grounds, prompting a share-market sell-off.Mr Moylan, from Frontline Action On Coal, says the Australian Securities and Investments Commission (ASIC) has seized his computer and phone as part of an investigation. ASIC has told ABC's 7.30 it is taking the matter very seriously and that a conviction could result in significant jail time.Senator Milne says she is "really surprised" investors were duped by the fake press release because ANZ has been "quite happily" investing in coal for a long time.

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