The alleged murderer of Cash App founder Bob Lee reenacted the stabbing

Nima Momeni, the suspected killer of Cash App founder Bob Lee, was filmed reenacting the motion of a stabbing ahead of his upcoming trial, according to new prosecutors' documents.

The filmed incident allegedly occurred before Momeni's arrest on April 13, 2023, and while he was speaking to a private investigator in a public place.

According to text messages to be revealed at trial, Momeni also believed Lee was involved in an “attempted rape” of Momeni's sister, Khazar Momeni – although friends and Khazar Momeni denied that allegation.

This, prosecutors said in their court filings, was the trigger for Nima Momeni's aggression toward Lee. His text messages afterward, they added, suggest he was not acting in self-defense.

Momeni has been in custody for a year and a half, accused of murdering Lee on April 4. His legal team has indicated that they will argue in the upcoming trial, which is set to begin on September 18, that he stabbed Lee in self-defense.

According to witnesses, Khazar Momeni and Lee were together at Jeremy Boivin's house in the early morning of April 3, 2023, less than 12 hours before Lee's murder. Lee and another friend left the house while Khazar Momeni and a friend named Arana Villegas were using drugs such as GHB together at Boivin's house, according to witnesses.

According to prosecutors and in police interviews, Villegas said she fainted and woke up to Khazar Momeni crying and changing clothes. She called her brother and husband to pick her up.

This, according to prosecutors, was the seed of Nima Momeni's hostility toward Lee, who was not present: Momeni began questioning Lee “aggressively” in a video call because “the girls had undressed in Boivin's house,” and then questioned Villegas in a similar manner. Both assured Momeni that nothing had happened.

But in later text messages, Momeni wrote to his sister that he had “begun preparing to file rape charges against both of them” – making it clear to prosecutors that he believed Lee and Boivin were involved in the alleged assault.