Nick Reiner, the son of Rob and Michele Reiner, was taken into custody Sunday night and is being held with no bail.
Online records previously showed bail had originally been set at $4 million but those documents have since been updated, The New York Times reported.
Los Angeles Police Department Chief Jim McDonnell said the 32-year-old has been “booked for murder” in their deaths, though the Los Angeles District Attorney’s office told CNN it has not yet filed criminal charges in the case.
“We have our robbery/homicide division handling the investigation. They worked throughout the night on this case and were able to take into custody Nick Reiner, a suspect in this case,” said McDonnell.
The couple were found dead in their Los Angeles area home Sunday with apparent stab wounds, a law enforcement official told The Associated Press.
LAPD Deputy Chief Alan Hamilton told reporters Sunday the force’s Robbery-Homicide division is investigating the deaths.
Hamilton said the LAPD intends to contact other members of the Reiner family as well.
“We are going to try to speak to every family member that we can to get to the facts of this investigation,” he said.
The division investigates select crimes that are often high-profile, including homicides, serial robberies and extortion.
In 2015, Nick and Rob made a movie together about addiction, informed at least partially by Nick’s own experience with hard drugs and homelessness as a teenager.
The film, “Being Charlie,” also reflected on the at-times difficult relationship between the father and son.
“When Nick would tell us that it wasn’t working for him, we wouldn’t listen,” Rob told the LA Times at the time. “We were desperate, and because the people had diplomas on their wall, we listened to them when we should have been listening to our son.”
At one point in the movie, the father figure tells his son, “I’d rather you hate me and you be alive.”
A family spokesperson confirmed the deaths of Rob, 78, and Michele, 68, Reiner over the weekend.
“It is with profound sorrow that we announce the tragic passing of Michele and Rob Reiner,” the spokesperson said in a statement. “We are heartbroken by this sudden loss, and we ask for privacy during this unbelievably difficult time.”
The death of the legendary film producer sparked an outpouring of tributes, including a bizarre one from President Donald Trump, who claimed without evidence that Rob Reiner died because he didn’t like Trump.
Rob Reiner “has passed away, together with his wife, Michele, reportedly due to the anger he caused others through his massive, unyielding, and incurable affliction with a mind crippling disease known as TRUMP DERANGEMENT SYNDROME, sometimes referred to as TDS,” the president wrote.
Rob Reiner once described Trump as the “single most unqualified human being to ever assume the presidency of the United States.”
CORRECTION: The film Rob Reiner made with his son Nick is called “Being Charlie.”