Erin Patterson's conviction for the deaths by poisoning of her estranged husband's relatives has prompted fevered speculation across Australia about her motive.

The defence will call Erin Patterson,” Mandy told the court. Patterson, who was convicted on Monday of three counts of murder and one count of attempted murder, was the only witness for her defence in a 10-week trial that gripped Australia.

The jury in the trial of an Australian woman who allegedly murdered three elderly relatives of her estranged husband using poisonous mushrooms will deliver its verdict on Monday, the court said in a statement.