Erik Menendez's daughter launched a furious tirade after her father was denied parole nearly 36 years after he and his brother gunned down their wealthy parents inside the family's Beverly Hills mansion.

The 54-year-old appeared before California's Board of Parole Hearings on Thursday, only to be told he will remain behind bars for at least three more years due to a long record of prison violations.

Within hours, his adopted daughter Talia erupted on social media, lashing out at the parole board, prison officials, and the media - even vowing to expose alleged abuses inside the correctional system.

'How is my dad a threat to society!!!!!! A 3 year denial???? Hell is about the break loose!!!!!! Wrong move RJ Donovan,' she wrote in all caps on Instagram, referring to the San Diego prison where her father is housed.

In a flurry of posts, Talia accused the media of being 'money hungry feeding pieces of trash' and claimed her father had been left tied to a hospital bed in agony.