At this exact point, the first SFPD car arrives with two officers. One, Pelissetti, approached Lindsey and tried to extract what was happening. The other officer went to the cab and found the bloody victim. While Pelissetti was asking questions, Lindsey was trying to explain that the suspect was in sight on Cherry St. By the time Pelissetti got the point, they both looked and the Zodiac was gone. The following is not to doubt their recollections, but much of the interaction between them and Officer Armond Pelissetti remains unresolved.
In the 2007 Zodiac documentary he stated "The kids had told me that whoever had done this crime left the cab and was ambling or walking down Cherry Street in a northerly direction, kinda towards the Presidio. I walked that way myself, I did not run, because there are innumerable alcoves and parked cars. So, I went down following every technique I knew so I didn't get my head blown off. Got down to the corner of Jackson Street - had to make a choice - I was on the east side of the street so turned right to the east and went up in that direction". This statement seems to negate that any conversation between him and the Robbins kids ever took place, or that he completely ignored everything they pointed to that night. If he had been told by Lindsey that the perpetrator was approaching the corner of Jackson and Cherry, and then was gone, not only would he have known the killer was not hiding behind a parked car or in any alcove along the majority of Cherry Street, he would have known the killer likely turned east on Jackson Street. But the impression given in the 2007 documentary was of an officer unaware of being told anything. His only reason given for turning east on Jackson Street was because he was already on the east side, not that the perpetrator was pointed out to him on the east side of Cherry, and then moments later had vanished.
If both sightings are of a lone Zodiac Killer, then one of the stories pertaining to the Robbins kids or Donald Fouke is factually incorrect. One killer can't be in two places at the same time. To this day, the discrepancy has yet to be explained.