In this day and age of technology and surveillance video you’d be hard pressed to convince me the police don’t already know who the shooter is......not to mention the victim is alive and more than likely they knew each other.
Supporting your point...If the SJPD statement was based on logic and honesty, they concluded this was an “isolated incident” because they already know who the shooter is and that he/she/it had some connection to the victim(s).
Yeah they did know each other, only reason police will come out in media and state with certainty its an isolated incident. Meaning they were targeted.