The son of renowned Hollywood filmmaker Rob Reiner is expected to be arraigned on Wednesday in a Los Angeles court in connection with the fatal stabbing of his parents.

Nick Reiner, 32, is facing two counts of first-degree murder following the deaths of his father, director and producer Rob Reiner, and his mother, photographer Michele Singer Reiner.

It was reported that the couple was found dead at their luxury home in the Brentwood area of Los Angeles on December 14, just days before Christmas.

Prosecutors allege that the 79-year-old filmmaker and his 70-year-old wife were stabbed to death.

Nick Reiner was arrested the same day after police located him several miles away from the family residence.

During the arraignment, Reiner will be formally informed of the charges against him and advised of his legal rights. Defendants at this stage typically enter an initial plea, often “not guilty.”

Speaking to reporters after an earlier court appearance, Reiner’s attorney, Alan Jackson, urged caution in public discussions surrounding the case.

“This is a deeply tragic situation for the entire family,” Jackson said. “There are complex and serious matters involved that must be examined carefully and responsibly.”

Authorities have disclosed that Nick Reiner has a history of substance abuse and was living in a guest house on his parents’ property at the time of the incident.

Reports indicate that he had attended a party hosted by comedian Conan O’Brien on December 13 alongside his parents, where some guests allegedly observed erratic behaviour.

According to U.S. media reports, the Reiners were scheduled to have dinner with former President Barack Obama and former First Lady Michelle Obama on the Sunday following the party.

They had also arranged for an in-home massage that day. When the massage therapist received no response at the door, the couple’s daughter, Romy Reiner, was contacted.

Romy reportedly arrived at the house with a friend and discovered her father’s body before alerting emergency services. Paramedics later confirmed that Michele Singer Reiner was also found dead on the property.

Nick Reiner was taken into custody later that night. If convicted, he could face life imprisonment without the possibility of parole or the death penalty, although California has not carried out executions in recent years.

Rob Reiner, the son of legendary comedian Carl Reiner, began his career as an actor before gaining fame as Michael “Meathead” Stivic in the classic television series, “All in the Family.”

He later became one of Hollywood’s most successful directors, with acclaimed films including This Is Spinal Tap, The Princess Bride, Stand by Me, When Harry Met Sally, and A Few Good Men.