Beloved filmmaker Rob Reiner and his wife, Michele Singer Reiner, were found dead at their Los Angeles home last month.

From left, Rob Reiner, Michele Singer Reiner, Romy Reiner and Nick Reiner arrive at the premiere of "Spinal Tap II: The End Continues" in Los Angeles in September. Richard Shotwell / Invision / AP

Nick Reiner, the son of Rob Reiner and Michele Singer Reiner, is set to be arraigned Wednesday on charges that he fatally stabbed his parents in their Southern California home last month.

Prosecutors in Los Angeles charged Nick Reiner, 32, with two counts of first-degree murder in connection with the Dec. 14 deaths of the beloved filmmaker and his wife, a photographer and movie producer.

He is being held without bail at a Los Angeles jail, inmate records show. If he is convicted, he would face a maximum sentence of life without the possibility of parole or the death penalty.

Nick Reiner`s attorney, Alan Jackson, previously asked the public not to jump to conclusions about his client and to act "with restraint and with dignity and with the respect that this system and this process deserves and that the family deserves."

Rob Reiner, 78, and Michele Singer Reiner, 70, were found dead in the primary bedroom of their home in the Brentwood neighborhood from what the Los Angeles County Medical Examiner`s Office described as multiple sharp force injuries.

Nick Reiner was arrested Dec. 14 without incident near the University of Southern California, police officials have said.

Authorities have not identified a possible motive.

Nick Reiner has openly discussed his history with drug addiction, telling People magazine a decade ago that he spent weeks sleeping on the streets and had been in and out of rehab beginning at age 15.

Those struggles inspired the 2016 film "Being Charlie," which Nick Reiner co-wrote and his father directed.

In a statement after the deaths, two of Nick Reiner`s siblings asked "for speculation to be tempered with compassion and humanity."

"Words cannot even begin to describe the unimaginable pain we are experiencing every moment of the day," the statement said. "The horrific and devastating loss of our parents, Rob and Michele Reiner, is something that no one should ever experience. They weren`t just our parents; they were our best friends."

Rob Reiner established himself as a TV star on the 1970s sitcom "All in the Family" before he turned to filmmaking and began directing some of Hollywood`s most iconic films, including "This Is Spinal Tap," "Stand By Me" and "When Harry Met Sally..."