The son of Rob and Michele Reiner, Nick Reiner, has been charged with killing his parents, officials announced on Dec. 16.

Nick Reiner, 32, was charged with first-degree murder with special circumstances, according to the Los Angeles District Attorney’s Office.

Nick Reiner allegedly murdered his parents with a deadly weapon, a knife, Los Angeles County District Attorney Nathan Hochman told reporters at a press conference.

Hochman declined to say whether the weapon has been located.

Officials also declined to outline the time of death or how specifically they determined that Nick Reiner killed Rob and Michele Reiner.

“He was found with good, solid police work,” Los Angeles Police Chief Jim McDonnell said during the briefing.

He said that he would not talk about “what was found or anything that could potentially taint the investigation.”

Alan Jackson, an attorney hired to represent Nick Reiner, did not respond to a request for comment. Jackson told reporters in Los Angeles earlier on Dec. 16 that his client would not be appearing in court before Dec. 17 because he has not been medically cleared.

“Hopefully he’ll be cleared tomorrow and we’ll get him here,” he said.

Nick Reiner is currently being held without bail.

Hochman indicated that the case will be handled like similar cases.

“This will proceed along the tracks that many of the first-degree murder cases proceed,” Hochman said. “Do I anticipate it being particularly fast? No. I anticipate it being very thorough.”

Police officers went to the home of Rob and Michele Reiner in Brentwood in west Los Angeles on the afternoon of Dec. 14 after receiving a call from the Los Angeles Fire Department. They determined that a crime had occurred and called homicide detectives, McDonnell said.

“It is with profound sorrow that we announce the tragic passing of Michele and Rob Reiner,” family members said in a statement to media outlets. “We are heartbroken by this sudden loss, and we ask for privacy during this unbelievably difficult time.”

Rob Reiner was a famous actor, director, and producer. Michele Reiner was a photographer.

Rob Reiner made the 2016 film “Being Charlie” with Nick Reiner. They said that the movie, which features a man struggling with addiction and family problems, was inspired by experiences they went through. Nick Reiner has said that he has at times been addicted to drugs and has been homeless.

Officials said on Dec. 16 that any past statements by Nick Reiner may be used in the case against him. They also said that if there is any evidence of mental illness, it will emerge in court.