"Shock and Grief: Friends of Bob Lee Mourn Tech Exec's Tragic Stabbing in San Francisco

 Bob Lee, Cash App founder and chief product officer of cryptocurrency company MobileCoin, was killed in a San Francisco stabbing, officials confirm.

Police say the fatal San Francisco stabbing happened at 2:35 a.m. Tuesday on the 300 block of Main Street."It's just almost numbing, I think everybody close to Bob is just in shock because there was no one who I don't think didn't love Bob," said Doug Dalton who was friends with Lee. Dalton had dinner with Lee last Saturday. He said Lee had relocated to Miami but was back in town and involved in a business summit for MobileCoin that took place last week. Dalton says Lee's spirits were high. He literally did not seem to have a care in the world. He was very excited about where things were going with MobileCoin. He was very excited to be back in the Bay for a bit," said Dalton. Team surveillance footage shows Bob Lee walking down Main St. in San Francisco's Rincon Hill neighborhood with apparent stab wounds in his upper left chest. The 43-year-old tech executive was looking for help and stumbled in front of Portside, a nearby apartment building near the Bay Bridge. Sources say Lee was holding his side with one hand and using his phone with the other before falling to his knees. A trail of blood covered both sidewalks. Lee was then able to get up and walk towards a police car that arrived on scene. Lee received CPR six minutes after emergency crews were dispatched but died at the scene. A kitchen knife with a 4-inch blade was found in the Caltrans parking lot across the street. SFPD Chief Bill Scott said Wednesday night that Lee did manage to call 911 to say he'd been stabbed,but did not give his location.