A woman on trial for allegedly poisoning her in-laws with deadly mushrooms has denied any intent to harm, calling the incident a tragic accident.

Erin Patterson, a 50-year-old Australian woman accused of killing three of her estranged husband's elderly relatives, began testifying in court on Monday, in a trial that has captured widespread attention across the country.

Patterson is charged with the July 2023 murders of her former in-laws—Gail and Donald Patterson—and Gail’s sister, Heather Wilkinson. She also faces an attempted murder charge in relation to Heather’s husband, Ian Wilkinson. All four became seriously ill after eating a homemade lunch of Beef Wellington, mashed potatoes, and green beans at Patterson’s home in Leongatha, a small town southeast of Melbourne.

Prosecutors allege the meal was deliberately laced with death cap mushrooms, a species known for its high toxicity. The accused has pleaded not guilty, with her defence team describing the incident as a “terrible accident.”

Taking the stand late Monday, Patterson reflected on her deteriorating marriage to Simon Patterson, which began in 2007, and said they struggled to communicate effectively. She also noted a growing distance between herself and the wider Patterson family before the fatal lunch.

Earlier in the day, the prosecution concluded its case after a month of testimony from family members, medical professionals, and forensic and mushroom experts. Simon Patterson had earlier described his relationship with Erin as strained at the time of the alleged poisoning.

The trial, which began on April 29, has drawn significant national and international media attention. The courtroom in Morwell, Victoria, has seen a large presence of journalists, podcasters, and documentary filmmakers since proceedings began.

Erin Patterson is due to continue giving evidence on Tuesday.

Copied