Nick Reiner is anticipated to enter a plea of not guilty in relation to the shocking murders of his parents, Rob and Michele Reiner.

The 32-year-old is expected to argue insanity as his defense, according to a report from TMZ on Friday, which highlighted Nick’s battle with schizophrenia.

According to the American Psychiatric Association, schizophrenia is a severe mental health condition that involves symptoms such as delusions, hallucinations, incoherent speech, cognitive difficulties, and a lack of motivation.

Prior to the tragic stabbing of his parents, Nick had reportedly been diagnosed with schizophrenia. Allegations suggest that the medication prescribed for his condition was contributing to increasingly erratic and dangerous behavior.

Insiders informed TMZ that Nick was receiving psychiatric care due to his mental illness, and that his conduct had become notably concerning in the weeks preceding the murders.

About a month ago, doctors reportedly changed Nick’s meds, at which point he became “out of his head.”

They were reportedly in the process of adjusting his medication to stabilize him when tragedy struck.

Nick had recently received care at a Los Angeles-based rehab facility that specializes in mental illness and substance abuse, per the outlet, which noted that Nick’s substance abuse worsened the schizophrenia.

Nick’s lawyer, famed criminal defense attorney Alan Jackson, did not immediately respond to Page Six’s request for comment.

Nick, who lived in his parents’ guesthouse in Brentwood, has a history of violence and drug addiction. He has been to rehab almost 20 times and experienced bouts of homelessness.

On Sunday afternoon, Rob, who was 78, and Michele, who was 70, were found stabbed to death in their home.

The LA County Medical Examiner later confirmed that the couple died from “multiple sharp force injuries,” ruling that the manner was homicide.

Nick was arrested Sunday night near Exposition Park in Downtown LA after reportedly leaving behind bloody evidence at a hotel in Santa Monica.

He is currently jailed at Twin Towers Correctional Facility, where he is being held without bail.

On Tuesday, he was charged with two counts of first-degree murder with a special circumstance of multiple murders.

Nick is facing a maximum sentence of life in prison without the possibility of parole or the death penalty.

He made his first court appearance Wednesday wearing an anti-suicide smock, with Jackson later telling reporters outside the courthouse that his client would be arraigned on Jan. 7.

He also asked the public to not rush to judgment or jump to conclusions, as he described the case as “very, very complex and serious.”

The night before the murders, Rob and Michele brought Nick to a Christmas party at Conan O’Brien’s house.

They were reportedly “reluctant to leave him home alone” because his “extreme and stressful behavior” had escalated and “grown degrees even more concerning in recent weeks.”

During the bash, where Nick was observed behaving strangely and getting into an argument with his parents, Rob reportedly said he was “petrified” that Nick could one day “hurt” him.