Suspect and Cash App founder Bob Lee appear to have argued before the murder, documents show

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Nima Momeni, the man accused of killing Cash App founder Bob Lee, appears to have gotten into an argument with him before Lee’s death, according to documents released by the San Francisco District Attorney’s office.

A message from Momeni’s sister to Lee from sometime that evening showed the sister checking in on Lee after the disagreement. The text message, per the documents from the district attorney’s office, stated: “Just wanted to make sure your doing ok Cause I know nima came wayyyyyy down hard on you And thank you for being such a classy man handling it with class.”

Momeni appeared in a San Francisco court earlier Friday for an arraignment that came one day after police announced his arrest. Momeni’s arraignment is set to continue on April 25. He will be held without bail in the meantime.

When Momeni entered the courtroom, members of his family sitting in the front row held up heart signs with their hands. Momeni, who was not cuffed, acknowledged them and smiled back.

Lee was stabbed to death in the Rincon Hill neighborhood of San Francisco early in the morning of April 4th. The moments following the stabbing attack were captured on surveillance video and in a 911 call to authorities, according to a local Bay Area news portal.

The surveillance footage, reviewed by the online news site The San Francisco Standard, shows Lee walking alone on Main Street, “gripping his side with one hand and his cellphone in the other, leaving a trail of blood behind him.”

In announcing his arrest Thursday, law enforcement described Momeni as a 38-year-old man from Emeryville, California and said Momeni and Lee knew one another, but didn’t provide further details about their connection.

California Secretary of State Records indicate that Momeni has been the owner of an IT business, which, according to its website, provides services like technical support.

Lee’s family issued a statement Thursday thanking the San Francisco Police Department “for bringing his killer to Justice” after Momeni’s arrest.

“Our next steps will be to work with the District Attorney’s office to ensure that this person is not allowed to hurt anyone else or walk free,” the statement said.

In the statement, the family described Lee’s upbringing, his career, and the impact of the technology he helped create.

“Every day around the world, people interact with technology that Bob helped create. Bob will live on through these interactions and his dreams of improving all of our lives,” the statement reads.