A triple-0 call a doctor made in the wake of Erin Patterson’s deadly lunch has been released as the mother-of-two is found guilty of murdering three lunch guests and attempting to kill a fourth.

Dr Christopher Webster made a frantic call to police after Patterson abruptly left Leongatha Hospital moments after arriving at the emergency department on the morning of 31 July, 2023.

Patterson had arrived complaining of gastro symptoms but was told by medics that her guests — Don and Gail Patterson and Ian and Heather Wilkinson — were suffering from suspected death cap mushroom poisoning.

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Medics told Patterson that she would also need to be admitted to hospital for treatment, but she said had not arrived prepared to spend the night and would return later.

Dr Webster rang Patterson’s phone several times urging her to return, and when that failed, he contacted police.

Emergency operator: “Hello, what address do you need. The police?”

Dr Webster: “This is Dr Chris Webster from Leongatha Hospital. I have a concern about a patient who presented here earlier, but has left the building and is potentially exposed to a fatal toxin from mushroom poisoning.

“I have tried several times to get her on her mobile phone.”

Emergency operator: “What’s her name?”

Dr Webster: “The last name is Patterson. P-A-T-T-E-R-S-O-N.”

Emergency operator: “First name?”

Erin Patterson in the back of a prison van in May arriving at court. Credit: MARTIN KEEP/AFP

Patterson attended Leongatha Hospital on 31 July 2023. Credit: GOOGLE

Don and Gail Patterson Credit: Social media

Heather Wilkinson died in August 2023. Credit: Supplied

Dr Webster: “Erin. E-R-I-N.”

Emergency operator: “When did she present at hospital?”

Dr Webster: “At 8:05.”

Emergency operator: “Today?”

“Mushroom poisoning, you said?”

Dr Webster: “Yes, so there were five people who ate a meal on Saturday. Two of them are in intensive care at Dandenong Hospital. Two have been transferred to Dandenong Hospital. And Erin presented this morning with symptoms of poisoning.”

Emergency operator: “And what happened when she presented? She just got up and left?”

Dr Webster: “No, there was time for a nurse to begin observations, and I was managing the other critically unwell patients, so I had a brief chat with her about where the mushrooms were obtained. After that, while I was attending the other patients, the nurse informed me she had discharged herself against medical advice.”

“She was only here for five minutes.”

The emergency operator asked Dr Webster to clarify how many people ate the meal, and he explained five people consumed the dish, four guests were now hospitalised, and Patterson had presented for care that morning.

Emergency operator: “ I’ve got the police notified for ***. Would you like them to contact you with an outcome?”

Dr Webster: “Yes, I would be happy for them to contact me at any time on the mobile number.”

“Thank you very much for your help.”

After seven days of deliberating, the 12 jurors returned with a unanimous verdict, finding Patterson guilty of three counts of murder and one count of attempted murder.

Patterson’s former in-laws, Don and Gail Patterson, both 70, and Gail’s sister, Heather Wilkinson, 66, died days after attending a lunch at her Leongatha home, in Victoria’s Gippsland region, on 29 July 2023.

Ian Wilkinson is pictured attending Erin Patterson’s trial at Latrobe Valley Magistrates Court. Credit: James Ross for AAP

Heather’s Baptist pastor husband, Ian, 68, spent months in hospital, but survived.

Patterson maintained her innocence throughout the trial, claiming the poisonings were accidental.

When the jury were sent to deliberate, Justice Beale advised jurors that prosecutors did not have to specify a motive to prove their case beyond reasonable doubt.

But Justice Beale also said jurors could consider the lack of motive in Patterson’s favour when assessing whether she had an intention to kill.

More than 50 witnesses gave evidence at the Supreme Court hearing in Morwell — including members of the Patterson and Wilkinson families, medical staff, Facebook friends, public health officials, scientists, digital experts, and police — as Patterson’s horrific crimes were laid bare.

The court heard tension ignited between Patterson, her estranged husband Simon, and his parents over child support issues in late 2022, with the mother-of-two complaining about them in expletive-filled messages to her Facebook friends.

Although messages between Patterson, Simon, Don and Gail appeared to show the troubles quickly blew over, just months later she began plotting their murders.

In autumn 2023, she foraged for death cap mushrooms — the most toxic fungus in the world — before purchasing a food dehydrator to dry them out so she could later use them to kill.

Telephone data shown to the court suggests Patterson travelled to Loch and Outtrim in April and May, just days after death cap mushrooms sightings were reported on citizen website iNaturalist — a webpage that computer analysis showed she had used from as early as May 2022.

Just hours after her phone pinged in Loch on April 28 2023, Patterson went to a local store and bought a $229 Sunbeam food dehydrator, sending photos of her drying out mushrooms to friends.

A few weeks later, in June 2023, she began planting the seed for her heinous scheme by sending Gail and Don messages claiming she had medical appointments booked for a suspicious lump on her elbow.

Erin Patterson trial Credit: 7NEWS

With her trap laid, she invited Simon, Gail, Don, Heather, and Ian over to lunch, with her estranged husband recalling to the court how she told him she had medical issues she wanted to discuss in the absence of the kids.

While Simon pulled out the day before, his parents, aunt, and uncle still went to Patterson’s Leongatha home, where she served up individual beef wellingtons laced with amatoxins to her guests on matching plates, while she ate from a different coloured dish.

After they finished their meal, Patterson told her in-laws she had ovarian cancer, leading the group- who had unknowingly just been poisoned at her hands — to pray for her and her health.

Over the next few hours and days, her guests’ health rapidly deteriorated as they began to experience excruciating symptoms as their organs began to shut down, including vomiting blood, nausea, stomach pain, and diarrhoea.

Meanwhile, Patterson swiftly moved to try and cover her tracks — feigning symptoms, dumping the food dehydrator, lying to police and public health authorities, and tampering with her phone.

In court, Patterson claimed she, too, was a victim and was sick with nausea and diarrhoea after inadvertently picking deadly mushrooms and adding them to the beef wellingtons.

She said she did not begin to suspect her foraged mushrooms had made their way into the meal until after she and everyone became sick.

Patterson claimed she then “panicked” and began destroying evidence and lying to authorities out of fear she would be blamed for the poisonings and would lose custody of her kids.

But the jury panel — of seven men and five women — did not believe her.

The verdict brings to an end the almost two-month long trial, which captured international headlines as dozens of journalists descended on the small mining community of Morwell.

She will be sentenced at a later date.

As Patterson awaits her fate, she will be remanded in at the Dame Phyllis Frost Centre, a maximum security prison for women in Melbourne’s western suburbs.

In Victoria, the maximum penalty for murder is life imprisonment while attempted murder carries a sentence of up to 25 years behind bars.