Erin Patterson was jailed for a minimum of 33 years for murdering three people with a toxic mushroom meal.
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Prosecutors in Australia have filed an appeal against the sentence of mushroom murderer Erin Patterson, saying it was "manifestly inadequate".
Last month Patterson, 51, was jailed for life with no chance of release for at least 33 years, for murdering three relatives and trying to kill another with a toxic mushroom meal.
On Monday, the deadline for the appeal, the Department of Public Prosecutions (DPP) confirmed that it had filed an appeal "on the basis that the sentence handed down to Erin Patterson is manifestly inadequate".
Patterson's jail term - one of the longest ever handed to a female offender in Australia - means she will be in her 80s before she is able to apply for parole.
Last week, her barrister Richard Edney told a hearing in Melbourne that she intended to appeal against her conviction, though this has not yet been formally lodged.
Patterson's appeal is not an automatic right. Her legal team must convince the appeal court in the state of Victoria that there were legal errors and that it should hear the appeal. No details have been given on their grounds for appeal.
