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

An Australian woman was on Monday convicted of murdering three elderly relatives of her estranged husband with a meal laced with poisonous mushrooms, in a case that has gripped the country.

The 50-year-old's in-laws died in 2023 after eating beef Wellingtons prepared by Patterson - they were later found to contain toxic mushrooms.