Rob and Michele Reiner’s cause of death has been officially confirmed following their son Nick Reiner’s first court appearance in the high-profile double murder case.

The Los Angeles County Department of Medical Examiner ruled that the couple died from multiple sharp-force injuries. Both deaths have been classified as homicides.

Online records show that the Hollywood director, 78, and his photographer wife, 70, were found dead on Sunday inside their $13.5 million home, the same day they are believed to have died, according to the Daily Mail. The place of death is listed as their residence, and their bodies have since been released.

Nick Reiner, 32, was arrested that same day and charged with two counts of first-degree murder in the deaths of his parents.

Prosecutors also added special circumstances, including multiple victims and the use of a dangerous weapon — a knife. If convicted, Nick could face life in prison without the possibility of parole, or the death penalty.

Nick appeared briefly in court on Wednesday wearing an anti-suicide vest. He did not enter a plea.

His defense attorney, Alan Jackson, requested more time to prepare the case, and the judge granted a continuance. Nick’s arraignment was rescheduled for January 7, and he was ordered to remain in custody without bail.

After the hearing, Jackson urged the public not to rush to judgment as the case moves forward.

“’This is a devastating tragedy that has befallen the Reiner family,” Nick’s lawyer Jackson said.

He said the case involves very complex and serious issues that must be handled carefully and thoroughly. He also asked the public to allow the legal process to move forward as it is intended, without rushing to judgment.

Rob and Michele Reiner were found dead Sunday afternoon after their daughter Romy was alerted by a massage therapist who had arrived at the home but couldn’t get inside.

A source familiar with the investigation told the Daily Mail the couple were killed in their bed, with their throats slashed.

According to new photos obtained by the outlet, Nick Reiner allegedly left a nearby hotel room covered in blood after the killings. He checked into room 207 at The Pierside Santa Monica around 4 a.m. Sunday. The boutique hotel, which costs about $400 a night, is located just steps from the Santa Monica Pier and close to a Metro line that leads to the area where Nick was later arrested.

When hotel staff entered the room later that morning, they reportedly found the shower filled with blood and blood splattered across the bed. Detectives who arrived Monday also found the windows covered with bed sheets.

At the time of the deaths, Nick had been living in the guesthouse at his parents’ $13.5 million Brentwood home.

Sources say Rob Reiner had been growing increasingly concerned about his son, who has struggled with drug addiction and mental health issues. The night before the killings, Rob and Michele brought Nick to Conan O’Brien’s holiday party in an effort to keep an eye on him.

Nick allegedly made several guests uncomfortable at the event, including getting into a tense exchange with Bill Hader, which reportedly led his parents to leave the party early.