The estranged husband of alleged murderer Erin Patterson has opened up about their relationship

Patterson's accused of the murders of three people, her estranged in-laws and one of their sisters, via a toxic mushroom-laced Beef Wellington.

Simon Patterson had declined the lunch invitation in July 2023.

Channel Seven's Estelle Griepink says he described Erin Patterson as witty, intelligent and generous.

Simon Patterson says their relationship deteriorated when the accused-killer found they'd been listed as separated on his tax return.