The younger son of Hollywood filmmaker and political luminary Rob Reiner made his first court appearance on Wednesday, charged with double murder in the stabbing deaths of his parents, but the arraignment was postponed for three weeks, and he did not enter a plea.

Nick Reiner, 32, was ordered to return to Los Angeles County Superior Court for a continuation of his arraignment on January 7. No explanation was given in court for the delay in the hearing, which was requested by the defense.

Bearded, wearing eyeglasses and garbed in a blue protective vest, he appeared in court three days after his arrest and a day after he was charged with one of the most shocking celebrity homicide cases in the city's history.

He is accused of fatally stabbing his parents, actor-director Rob Reiner, 78, and photographer-producer Michele Reiner, 70, in the early morning hours of Sunday in the couple's mansion in the affluent west LA neighborhood of Brentwood, then fleeing the scene.

The couple's bodies were discovered Sunday afternoon, hours before a planned evening gathering with former President Barack Obama and Michelle Obama, according to the former first lady.

Nick Reiner, who has publicly acknowledged a years-long struggle with drug addiction, was arrested that night near a downtown Los Angeles park close to the University of Southern California campus.

Seated slightly slouched behind a glass partition in the courtroom, the defendant spoke little during his few minutes in court, saying only, "Yes, your honor," in a calm, clear voice when asked by Judge Theresa McGonigle if he agreed to waive his right to a speedy arraignment. 

According to prosecutors, a knife was used in the Reiner killings, but few other details were given about the circumstances of the slayings. Authorities have made no mention of a possible motive or whether drug use was a factor.