LOS ANGELES (AP) — Rob Reiner’s younger son, Nick Reiner, was in jail Monday after being booked for what investigators believe was the fatal stabbing of the director-actor and his wife at their Los Angeles home a day earlier, authorities said.

It was not immediately clear what charges Nick Reiner, 32, would face. A police statement said he was being held without bail and the case will be presented to the district attorney’s office on Tuesday.

Representatives for the Reiner family did not immediately respond to a request for comment, and it wasn’t immediately clear if Nick Reiner had an attorney who could speak on his behalf.

Nick Reiner has spoken publicly of his struggles with addiction. By 18, he had cycled in and out of treatment facilities with bouts of homelessness and relapses in between. Rob and Nick Reiner explored their difficult relationship and Nick Reiner’s struggles with drugs in a semi-autobiographical 2016 film, “Being Charlie.”

Rob and Michele Singer Reiner were found dead Sunday afternoon at their home in Los Angeles, and investigators believe they were stabbed, a law enforcement official told The Associated Press. The official, who was briefed on the investigation, could not publicly discuss the details and spoke to the AP on condition of anonymity.

Nick Reiner was arrested Sunday around 9:15 p.m., police said.

Reiner was long one of the most prolific directors in Hollywood, and his work included some of the most memorable movies of the 1980s and ’90s, including “This is Spinal Tap,” “A Few Good Men,” “When Harry Met Sally” and “The Princess Bride.”

His role as Michael “Meathead” Stivic in Norman Lear’s 1970s TV classic “All in the Family” as a liberal foil to Carroll O’Connor’s Archie Bunker catapulted him to fame and won him two Emmy Awards.

The son of comedy legend Carl Reiner, Rob Reiner married photographer Michele Singer Reiner in 1989. The two met while he was directing “When Harry Met Sally.” They had three children together: Nick, Jake and Romy.

Reiner told The New York Times in 1989 that the cinematographer on “When Harry Met Sally,” Barry Sonnenfeld, predicted he would marry her. “I look over and I see this girl, and whoo! I was attracted immediately,” Reiner said.

Michele Singer Reiner was a producer for “Spinal Tap II: The End Continues,” “God & Country,” “Albert Brooks: Defending My Life” and “Shock and Awe,” according to IMDB. Earlier in her career, she photographed the cover image of President Donald Trump’s 1987 bestseller “The Art of the Deal.”

Trump on Monday blamed Rob Reiner’s outspoken opposition to the president for the actor-director’s killing, delivering the unsubstantiated claim in a social media post that seemed intent on decrying his opponents even in the face of a tragedy.