BREAKING NEWS UPDATE: An arrest has been made in the San Francisco stabbing death of 43-year-old tech executive Bob Lee, according SFPD. They say the suspect, 38-year-old Emeryville tech entrepreneur Nima Momeni, appeared to have known Lee and it was not a random street crime. Get the latest updates here.
Images obtained by the Daily Mail show 43-year-old tech exec Bob Lee stumbling along Main St. in San Francisco's Rincon Hill neighborhood. Lee is seen through the front glass doors of the Portside apartment building as he attempts to use the call box before falling to the ground.
INTERACTIVE: Take a look at the ABC7 Neighborhood Safety Tracker
Sources say Lee had two stab wounds in his upper left chest. Lee was on the ground for about 10 seconds before standing up and walked towards a police car. Minutes later, Lee died at the scene. Lee's cell phone and his wallet were not stolen during the attack and both items were recovered at the scene, multiple sources told the I-Team.
RELATED: Man arrested in fatal stabbing of Bob Lee, appears to have known Cash App founder, source says
"We have some leads to follow up on," said San Francisco Police Chief Bill Scott. "I can't disclose what those are now, it's early on in the investigation. But I'm hopeful and I'm very confident."
San Francisco District Attorney Brooke Jenkins told the ABC7 News I-Team she hasn't received any information yet to suggest Lee was targeted.
RELATED: Is SF's violent crime as 'horrific' as tech execs claim? Here's what data shows
Stephanie Sierra: "At this point a killer is on the loose, do you have any reason to believe the public should be concerned?"
Brooke Jenkins: "Anytime we have somebody who has committed murder, we should all be concerned if they are out and about on our streets. That is why SFPD is working so hard to solve this case.... Unfortunately this is one that's going to take time to solve."
Sierra: "Have you seen this surveillance video?
Jenkins: "I have not."
Jenkins told the I-Team she can request access to the surveillance footage, but doesn't plan to until an arrest is made.
Sources told us investigators found a silver kitchen knife with a four inch blade in the Caltrans parking lot across the street, but it's unclear if that was the weapon used in the attack.
VIDEO: 'Numbing': Friends of Bob Lee react to tech exec's fatal stabbing in San Francisco
Sierra: "Would you consider it unusual for a kitchen knife to be used in an alleged targeted attack?"
Jenkins: "As a former prosecutor in our homicide unit, I have seen murders committed in all various types of ways. Oftentimes people who choose to commit murder choose to do it in ways they believe they can more successfully get away with it."
The I-Team has learned Lee was staying at One Hotel which is about a half mile away from the Portside apartment building where emergency crews found Lee on the ground. Sam Habash owns the convenience store across the street.
"This doesn't happen a lot around here," said Habash, who's owned the store for nearly two decades. "We've never seen anything like this... this is too much, my condolences to the family."
RELATED: Slain Cash App founder Bob Lee was a leader in financial tech, expert says
While the moments that led up to the stabbing remain a mystery, DA Jenkins dispels rumors this attack is part of escalating violent crime in San Francisco.
"I would ask that people not rush to judgment about the circumstances of this murder, we have nothing about how this happened, whether this was a repeat offender or a targeted attack," Jenkins told the I-Team.
But the I-Team has learned Chief Scott is confident the investigation is making progress.
"There's a lot that has been done and I'm hopeful on this," Chief Scott said. "We'll have more soon."
More than a hundred people packed into San Francisco's Sunset Recreation Center Thursday night. This was the first time San Francisco's DA and police chief have together spoken to community members in-person since the incident.
"We're investigating this as a murder absolutely. There's evidence that we found that I can't talk about because we don't want to jeopardize this case," said Police Chief Bill Scott who continued saying, "There are some good developments in this case, I apologize but that's as much as I can say at this point."
Those here in the Sunset District say they understand that crimes have happened in other parts of the city but they want more attention on crimes that have happened here.
"The focus has been on downtown and that's not all of San Francisco. San Francisco has neighborhoods, they need to be equally represented in terms of police, fire, the works," said Helen Smith who lives in the Sunset.
"Right now, all the places are not safe, even in the Sunset that's why we concerned about it," said Elaine Trang a Sunset District resident.
"We don't have the right number of policemen," said Smith to which we asked, "You'd like to see more?" Smith quickly responded saying, "Yeah."
Chief Scott says that the department is short 568 officers but also says there is good news regarding those who may soon head to the police academy in hopes of becoming San Francisco police officers.
RELATED: A look at homicides in SF this year, in light of Cash App founder Bob Lee's stabbing death
"Our applications have gone up we're double where we were last year on applications," said Chief Scott.
Supervisor Joel Engardio, who represents the Sunset District, the largest neighborhood in San Francisco, says that the city has also approved more funds for additional community ambassadors for the area.
"I want to point out some good news. We have got to think about some good news today. I'm hopeful because you see our district attorney and our police chief sitting together here okay. I cannot emphasize enough how important this is," said Supervisor Engardio.
"We have to do all this together because we do well when we can do it together but we still have a long way to go," said Chief Scott.
SFPD is asking anyone with video surveillance or dashcam video from late Monday night to early Tuesday morning in the Rincon Hill area around Main St. to call 415-575-4444.
Take a look at more stories by the ABC7 News I-Team.
If you're on the ABC7 News app, click here to watch live