Erin Patterson is set to launch an appeal after she was found guilty of three counts of murder and one count of attempted murder.

Reports surfaced on Wednesday morning that the 50-year-old was going to appeal her conviction after a jury found she was guilty of all four charges on Monday.

WATCH THE VIDEO ABOVE: Mushroom killer Erin Patterson set to appeal guilty verdict.

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It is unclear exactly what grounds the appeal will be on, however her legal team will have 28 days from the date she is sentenced to file an appeal. She will be sentenced later this year.

Potential grounds for an appeal include the jury interpreted the evidence incorrectly, or that the judge gave the wrong instructions to jurors before he sent them out to deliberate.

Patterson spent her second night at the Dame Phyllis Frost Centre on Tuesday where she is understood to be in protective custody.

On Monday, she was found guilty of killing former in-laws Don and Gail Patterson, Gail’s sister, Heather Wilkinson, and attempting to kill Heather’s husband, Ian Wilkinson.

The trio died and Ian became gravely ill after attending a 2023 lunch at Patterson’s Leongatha home, where she served them a meal of beef wellington containing toxic death cap mushrooms.

Patterson has been held at the women’s prison in Melbourne‘s west since she was charged in November 2023.

During her nine-week trial in Morwell, she was driven to the Latrobe Valley Magistrates’ Court every Monday morning in a prison van.

She attended court and slept in a police cell next door before returning on Friday morning to the Dame Phyllis Frost Centre for the weekend.

There were reports in early 2024 that Patterson was threatened by inmates and had to go into a protected unit on her own.

A fellow inmate then accused Patterson of tampering with her food, claiming she fell ill after eating a meal prepared by the mother-of-two.

The claim was investigated however it unclear if any further action was taken.