Lyle Menendez faces a parole hearing in the US state of California on Friday, a day after his younger Erik was denied in his own bid for release.

The brothers have spent decades in prison for shooting dead their wealthy parents in a crime that shocked America in 1989.

They say they were acting in self-defence as a result of their father's abuse, and have spent years arguing for their release. They were made eligible for parole after they were resentenced in May, shortly after their case regained public attention.

Lyle will appear before a parole panel different from his brother's, and it is possible he could be freed while Erik remains incarcerated.

The brothers' conduct behind bars and before the 1989 killings is viewed differently, meaning that Lyle's case could elicit a different decision.