Sergeant Brent Dittmer

As far as surviving? Yeah. I don't think so.

There was a lot of talk that, you know, this is random violent homeless crime in San Francisco. Could that have happened when we first get here? Maybe. But very quickly, it really doesn't appear to be the case. And he's still got his watch and his wallet. He does.

And if that's the story people are going to run with, that is an advantage for us because the people who are responsible, we don't want to know what we know.

Let everybody think that this is whatever's on Twitter at that time. We'll work on what actually happened.

From some of the angles, yeah, you could tell it was a white BMW Roadster.

You'll see behind him this vehicle pull away from the scene, a vehicle that we determined was this white BMW Z4, a small coupe.

I think so. It's famous or infamous, maybe. Well, I think the short version is a large luxury high-rise apartment building.

Yeah, yeah. I think it was famous first because Joe Montana was living there, and then it became famous because it started tilting.

We saw a white BMW that matched the white BMW that was seen driving away from the scene of the killing. We run the plate, and the BMW is registered to Nima Momeni.

Is there any evidence that Nima and Bob even knew each other before that evening? Not really, no. And that's where Kazar comes into play in all of this.

My first plan at this point is to figure out who this Nima Momeni is. We didn't want to go into the Millennium Tower and start knocking on doors or anything like that because we don't want to tip anybody off at what is really a pretty early stage of this investigation.

Nemo Momeni has a consulting tech business. He lives over in the East Bay.

Yeah. I mean, if you could say tech is the same business, they're in the same business, I don't think they're in any way kind of on the same level. Yeah.

They don't. And, you know, that's where Kazar comes into play in all of this.

Definitely friendly acquaintances, you know, talked, texted back and forth about hanging out together, things like that.

And I figured... Well, maybe this is going to be something minor. Didn't turn out to be minor. Not quite.

I don't know. It certainly seems clear that they know that she sees other people. That's been described as an open marriage.

Did you have any suspicions as to whether or not Kazar might be involved in this? I did. You know, certainly that's on the table. We know that Bob knew her and, you know, didn't seem to know Mima as far as we knew. Turns out, Kazar and Bob had been together just hours before he died. Kazar Momeni had spent time with Bob the day before the killing.

He's a prominent person in the tech world.

Up until that point, we didn't think we were gonna have any video of the killing, so having something was very significant.

We just don't have a lot of call-outs to that area. It's not an area where there's a lot of violent crime. They knew where the victim had collapsed, who attacked him, and where.

Thank you.

Which points where? So the blood trail moves up this sidewalk along the building toward Harrison Street. He ends here, which means he came down here. That's right. There were some blood swipes on the building itself, but then it was blood drips that were moving down the sidewalk up towards Harrison Street. You can tell from the droplets the direction that the person was traveling? Yes.

Thank you.

And as we get close to Harrison here, the blood drops went across the street over toward the west sidewalk.

Thank you.

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There's a knife over here. The knife was on the other side of a fence located near where this blood trail starts, and the area that was fenced off is a parking lot. That's probably your knife. Probably the knife. Blood on it?

It's a large high rise. A lot of people live there and almost all of them have money.

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Sometimes it's a couple of weeks, sometimes it's months, sometimes it's over a year.

Witnesses? Not really. There was a homeless person that was contacted by the officers. That person had been released from the scene, and he didn't say that he saw, heard, or knew about anything that happened.

There's some. There aren't as many as you'd like. There's never as many as you like. Never. And they're never as good as you want them to be.

We were notified that the victim was Bob Lee. You ever heard of Bob Lee before? No. What do you hear from the hospital about what his injuries were? I knew initially that he had been stabbed once in the right hip, and then there were two additional stab wounds on the left chest. One of those punctured his heart.

My focus was just, let's figure out what happened here and who did it and just get on that trail.

Kazar puts the two of them on kind of a collision course. We have them getting into the elevator.

You feel confident? I have had my heart broken in this town before, so confidence is always going to be limited on anything.

She didn't have any idea why this would happen. Hard to find people who didn't like Bob Lane? I can't think of anybody who said they didn't like Bob Lane.