Nick Reiner, the second son of renowned Hollywood director and actor Rob Reiner, has been arrested and is in custody after Reiner and his wife, Michele Singer Reiner, were found dead in their Los Angeles apartment.
Nick Reiner, 32, is one of the couple's three children.
He has worked as a screenwriter and is particularly known as the co-writer of the screenplay for the film "Being Charlie" (2016), which was directed by Rob Reiner himself.
The film, which tells the story of a drug-addicted teenager, was partly based on Nick Reiner's personal struggles with addiction, as he told People magazine at the time of its release.
Police are investigating the incident in an upscale neighborhood of the city and the deaths are being treated as a suspected homicide.
The shocking news has sparked reactions from top officials in the United States and California. Former President Barack Obama and his wife, Michelle, expressed grief over the tragic event.
There were also reactions from Los Angeles Mayor Karen Bass and California Governor Gavin Newsom.
Meanwhile, US President Donald Trump has reacted on social media, criticizing Reiner and suggesting, without providing evidence, that the two deaths "reportedly" occurred "due to the anger he caused others" with what he called "Trump Derangement Syndrome."
Rob Reiner was known as a vocal critic of the president.
Rob Reiner remains one of the biggest names in American cinema, known for directing iconic films such as When Harry Met Sally, This Is Spinal Tap, The Princess Bride, Stand By Me, Misery and A Few Good Men.
Following the shocking news, important figures from Hollywood and politics have expressed their condolences. In addition to his artistic career, Reiner was also a strong supporter of liberal causes and Democratic politics.