In 1989, brothers Lyle and Erik Menendez shot and killed their parents several times in their Beverly Hills mansion.
They were convicted of first-degree murder and conspiracy to murder in 1996 and sentenced to life imprisonment without the possibility of parole.
A Los Angeles judge on Tuesday reduced their verdicts to qualify them for parole.
The case has attracted public interest after the release of a new Netflix TV series Monster: The Story of Lyle and Eric Menendez in September.
Last year, George Gascón, a former Los Angeles district attorney, demanded a change in the sentences of the brothers, with the possibility of no parole being 50 years.
The hearing was filed Tuesday with Los Angeles County Superior Court Judge Michael Jesic.
"I do believe they have done enough in the last 35 years and should have a chance," he said.
The brothers are eligible for parole under the California Young Offender Act, which allows individuals who commit crimes before the age of 26 to seek reduced sentences.
The siblings were 18 and 21 years old at the time. They are now 54 and 57 years old.
At the hearing, family members and a former prisoner were among the people who testified in support of such censorship.
Those who worked with the brothers talked about the educational courses they completed and how to create hospice programs for older people and patients.
The district attorney’s office strongly opposed the lower sentences, saying the brothers continued to “make excuses” for their actions rather than taking full responsibility and not recovering.
The brothers addressed the court via video and apologized for their actions.
They also talked about their hopes of working with victims of sexual abuse and helping those incarcerated for a second chance outside of prison.
The California Parole Board will now decide whether to release the brother from prison.
In addition, the state's governor, Gavin Newsom, is considering the brothers' wide-scale requirements. If approved, it may result in a reduction in sentence or pardon.
Governor Newsom asked the parole board to conduct a risk assessment to check whether the brothers released the brothers pose a risk to the general public.
The full report has not been released, but the district attorney said it indicates “the risk of violence is moderate.”
A parole board hearing on the petition for forgiveness is scheduled to take place on June 13.
It is unclear whether the board will also consider the possibility of parole based on Judge Jesic’s resentment towards the same hearing.
Lyle and Erik Menendez killed their parents, Jose and Kitty Menendez, at their home in Beverly Hills on August 20, 1989.
Their father, a 45-year-old Hollywood executive, was shot dead six times by the brothers who bought a shotgun a few days before the attack.
Their mother died of 10 shotgun explosions.
The brothers initially told police that they found their parents died when they returned home.
Their arrested psychologist's girlfriend was arrested, who had been treating Erik Menendez to police and said he had a physical threat to the doctor.
The brothers claimed that after years of physical, emotional and sexual abuse, they committed self-defense murders despite not proving harassment in court.
They said they were worried that their father would kill them after threatening to expose him.
But prosecutors argued that the young men killed successful parents to inherit their millions of dollars in property.
The brothers were detained in 1990 and murdered in 1993, first of all, each of which was a jury.
However, two juries were at a deadlock in 1994, leading to crimes, and the two later tried together again in 1995.
In their joint trial, the judge excluded obvious evidence of abuse from his defense. The recording of the murder was discussed with the doctor and the judge was ruled in court.
The jury found them guilty, and the two were convicted of first-degree murder and murder in 1996.
After investigating the killings, the two brothers who were separated during the detention period said they might have escaped if they were staying together and were reunited in prison in 2018.
The case regained attention after Netflix released a series about the brothers in September.
Monster: The story of Lyle and Erik Menendez, was filmed at the top of the platform's streaming rankings, reportedly with 12.3 million views in the first weekend of its release.
It explores what might lead to siblings killing parents and proposes murders from different perspectives.
Its creators say the series is based on extensive research that follows the incidents of murders.
It includes the brothers’ abuse claims and the display of things from the perspective of parents.
The show introduces the case to a new generation and has attracted the attention of celebrities – including Kim Kardashian and Rosie O'Donnell, who call on the brothers to release them.
The series is a follow-up to the controversial First Monster series about American serial killer Jeffrey Dahmer.
After the release, Erik Menendez shared his wife’s statement on X.
He said the show was "depressing" and he "believed that we have surpassed Lyle's lies and portrayal of devastating characters".
He added: "It's hard for me to know that Netflix's dishonest portrayal of the tragedy surrounding our crimes has taken the painful truth a few steps back - back to an era when prosecutors build narratives on a system of belief that men are not sexually abused, while men and women suffer different rapes."
Family members also shouted loudly and said the brothers were “harmed by this weird shock dance” and the show was “full of misunderstandings.”
Ryan Murphy, who produced the show, told Variety that the comments were “foreseeable at best.”
He added that the family’s response was “funny because I wanted to elaborate on what they thought was shocking or not. It wasn’t like we were doing anything. It was all raised before.”