Ammon News - An Australian woman was on Monday convicted of murdering three elderly relatives of her estranged husband with a meal laced with poisonous mushrooms, and attempting to murder a fourth, in a case that gripped the country.

Erin Patterson, 50, was charged with the murders of her mother-in-law Gail Patterson, father-in-law Donald Patterson and Gail's sister, Heather Wilkinson, along with the attempted murder of Ian Wilkinson, Heather's husband.

The four had gathered at Erin Patterson's home, where the mother of two served them individual Beef Wellingtons that were later found to contain death cap mushrooms.

On Monday, the jury in the case found her guilty of all four charges.

Patterson had pleaded not guilty to all charges, saying the deaths were accidental. She will be sentenced at a later date and faces a maximum life sentence.

Her barrister, Colin Mandy, made no comment as he left the court through a scrum of journalists. Reuters