mr. mina momeni over the death of bubbly. --of bob lee. ama: nine days after a tech executive was stabbed to death in san francisco, police announce an arrest on the case. dan: thanks for joining us. here's what we know. last tuesday, cashapp founder bob lee was stabbed around 2:30 a.m. and later died. today police announced nima momeni was a rest the murder in the case. ama: police say that the two knew each other and this was not a random crime. for details, let's go to cornell bernard, in the newsroom with more. reporter: the police chief, offering few details on the murder but did say it was not a random crime because they knew one another. the da broke and -- da brooke jenkins, calling out those who spread false information about the crime early on. >> he was taken into custody without incident. reporter: the police chief, announcing a break in the case in the stabbing death of 43-year-old tech executive bob lee. scott says the 38-year-old was arrested in the east bay and charged with murder. according to his linkedin profile, he was