Rob Reiner and Michele Singer Reiner Death Case: Nick Reiner ARRESTED on 'suspicion of murder'; was seen arguing with his dad at Conan O'Brien's party on eve of killing

Nick Reiner, the 32-year-old son of director Rob Reiner and Michele Singer Reiner, has been arrested on suspicion of murdering his parents. The couple was found stabbed to death in their Los Angeles home, and Nick Reiner is currently being held without bail. Authorities are investigating the circumstances surrounding the deaths.

The arrest followed reports of an argument between Nick and Rob Reiner at a party hosted by comedian Conan O'Brien the night before the bodies were discovered, according to The New York Times. An attendee claimed Rob Reiner told his son his behavior was "inappropriate," though the subject of the argument remains unclear.

The bodies of Rob and Michele Singer Reiner were discovered Sunday afternoon in their Brentwood home by their daughter, according to the Associated Press. TMZ initially reported the couple had been stabbed, a detail later confirmed by law enforcement to the AP. An official who spoke on condition of anonymity confirmed the couple had wounds consistent with a knife attack.

President Donald Trump posted on his social media network, blaming Rob Reiner's death on what he termed "Trump Derangement Syndrome," citing Reiner's outspoken criticism of him.

Killings are uncommon in Brentwood. The Reiner home is located about a mile from where Nicole Brown Simpson and Ron Goldman were murdered in 1994.

Nick Reiner has publicly discussed his struggles with addiction. He and his father explored their challenging relationship and Nick's battle with drugs in the 2016 semi-autobiographical film, "Being Charlie." He had been in and out of treatment facilities since he was 18, experiencing periods of homelessness and relapse.

Rob Reiner, son of comedy legend Carl Reiner, was a prominent director known for films such as "This is Spinal Tap," "A Few Good Men," "When Harry Met Sally," and "The Princess Bride." He gained fame as Michael "Meathead" Stivic on "All in the Family," winning two Emmy Awards. He married photographer Michele Singer Reiner in 1989, and they had three children: Nick, Jake, and Romy. Reiner was previously married to Penny Marshall. Michele Singer Reiner worked as a producer on various projects, including "Spinal Tap II: The End Continues" and photographed Donald Trump's 1987 book, "The Art of the Deal."