In Los Angeles, Nick Reiner appeared in court on Wednesday for charges related to the alleged murder of his parents, acclaimed director Rob Reiner and his wife, Michele Reiner. During the hearing, he did not submit a plea.

The 32-year-old, charged with two counts of first-degree murder under the special circumstance of multiple murders, sat behind a glass partition. Wearing a dark jumpsuit and showcasing a buzz cut, Reiner spoke only to confirm his waiver of the right to a speedy trial, stating, “Yes, I agree, your honor.”

Reiner’s legal representation saw a change as his attorney, Alan Jackson, who has previously defended Karen Read in Massachusetts, withdrew from the case at the hearing. Jackson is under a court order preventing him from discussing the case further.

When questioned about postponing the arraignment, Reiner responded, “Uh, yeah, I agree.”

With Jackson’s withdrawal, Kimberly Green, a public defender, has been appointed to take over Reiner’s defense. Reiner is scheduled to appear in court again on February 23 and remains in custody without the option for bail.

A Reiner family spokesperson said, “They have the utmost trust in the legal process and will not comment further on matters related to the legal proceedings.”

Jackson told reporters after court, “I had to withdraw as Nick Reiner’s counsel (due to) circumstances beyond our control, but more importantly, circumstances beyond Nick’s control. … Sadly, it’s made it impossible for us to continue our representation of Nick.”

“Pursuant to the law in California, Nick Reiner is not guilty of murder,” he added. “We wish him the very best moving forward.”

Reiner, 32, the youngest of Rob Reiner’s four children, is accused of killing his parents at their Brentwood home last month. He was ordered to remain behind bars at the Twin Towers Correctional Facility in downtown Los Angeles without bail following his first court appearance on Dec. 17, when he wore shackles and a suicide-prevention smock.

He could enter a not guilty plea by reason of insanity. According to ABC News sources, law enforcement and defense attorneys have been piecing together Nick’s psychiatric and substance abuse history.

He was reportedly removed from suicide watch ahead of his arraignment.

If Nick Reiner pleads not guilty next month, the case would normally head toward a preliminary hearing to determine whether there is enough evidence for him to stand trial. His mental competence for trial could also be a factor.

A decade ago, Nick Reiner publicly discussed his severe struggles with addiction and mental health after making a movie with his father, “Being Charlie,” that was very loosely based on their lives.

Rob Reiner, 78, and Michele Singer Reiner, 70, were killed early on the morning of Dec. 14, and they were found in the late afternoon, authorities said. The L.A. County Medical Examiner said in initial findings that they died from “multiple sharp force injuries,” but released no other details, and police have said nothing about possible motives.

The counts against Reiner come with special circumstances of multiple murders and an allegation that he used a dangerous weapon, a knife. The additions could mean a greater sentence.

Prosecutors have said they have not yet decided whether to seek the death penalty.

ABC News and the Associated Press contributed to this report.