Murray Olds: Australian correspondent on Erin Patterson's estranged husband taking the stand in mushroom poisoning trial - Heather du Plessis-Allan Drive

The estranged husband of killer-accused, Erin Patterson, has taken the stand today - revealing a series of texts.

Patterson's charged with murdering his parents and aunt with a beef wellington lunch laced with poisonous death cap mushrooms.

Australian correspondent Murray Olds says the ex-husband, Simon Patterson, was invited to the lunch - but declined. 

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