The Silicon Valley stabbing suspect charged in the death of Cash App founder Bob Lee blew kisses to his mom Tuesday on his way out of a San Francisco courtroom as his attorneys hope to clear him of wrongdoing in a brutal attack, after which surveillance cameras recorded the victim stumbling down a street and pleading for help.

Nima Momeni, a 38-year-old outsourcing entrepreneur accused of knifing Lee in an alleged spat over his sister in San Francisco earlier this year, said little in court, aside from agreeing to waive time until a new hearing on Oct. 2, when the judge could set a trial date.

He has maintained his innocence, and his lawyers said previously that Lee's death was an accident as Momeni acted in self-defense.

Momeni's mother remained on her feet in the public section of the courtroom for the entire appearance, blowing kisses to her son when he turned to leave. On his way out, he sent some back.

CASH APP'S BOB LEE VISITED SUSPECT'S SISTER HOURS BEFORE MURDER. ARGUED WITH ALLEGED KILLER, COURT DOCS REVEAL

Split image of Bob Lee and suspected killer Nima Momeni, who is wearing orange jail clothes

Right: Nima Momeni stands up to exit the courtroom after an appearance at the Hall of Justice in San Francisco, Tuesday, April 25, 2023. Momeni has been charged with murder in the death of tech entrepreneur Bob Lee. Left: Bob Lee. (Bob Lee/Facebook, AP Photo/Jeff Chiu)

Prosecutors also told the court they were ready to release a car seized during the investigation. Momeni's lawyers are seeking to have impound fees waived.

The suspected killer had pleaded not guilty at his arraignment in May. After a preliminary hearing cleared the way for the case to go to trial, his lawyer re-entered the not guilty plea on his behalf Tuesday. 

A court sketch depicts Nima Momeni’s arraignment in San Francisco

A court sketch depicts Nima Momeni’s arraignment in San Francisco, California on Tuesday, Aug. 15, 2023. Momeni's lawyer entered a plea of "not guilty" regarding the stabbing death of Cash App founder Bob Lee. (Vicki Behringer)

Momeni, an Iranian national, was arrested on April 13, nine days after allegedly knifing the 43-year-old tech titan in a dispute over his sister, Khazar Momeni, the wife of a prominent San Francisco plastic surgeon.

A witness told police that the suspected killer had confronted Lee earlier in the evening for allegedly using drugs with his sister, according to court documents.

Khazar Momeni and Husband in formal photo op

Khazar Momeni and her husband Dr. Dino Elyassnia pose up for a photo, May 5, 2020. (Vincent Gotti Photography)

Later that evening, the two were seen on surveillance video leaving an apartment building together and getting into Momeni's car.

They drove to a parking lot, where court documents allege Lee was stabbed through the heart with a kitchen knife and seen stumbling down Main Street in San Francisco's Rincon Hill neighborhood, where he begged passersby for help and called 911 himself. 

A court sketch depicts Nima Momeni’s arraignment in San Francisco

A court sketch depicts Nima Momeni’s arraignment in San Francisco, California on Tuesday, Aug. 15, 2023. Momeni's lawyer entered a plea of "not guilty" regarding the stabbing death of Cash App founder Bob Lee. (Vicki Behringer)

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Investigators have recovered the suspected murder weapon, a knife they say came from Khazar Momeni's kitchen, which allegedly contained both her brother's DNA and Lee's blood.

Bob Lee poses with his children

Cash App founder and tech exec Bob Lee, 43, was a father of two. He had recently moved from San Francisco to Miami due to a concern in public safety issues. (Bob Lee/Facebook )

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After the stabbing, Lee appeared on surveillance video, stumbling and holding his side and trying to flag down passersby for help before he collapsed. He was rushed to the hospital, where he died.